Linux Kernel: security vulnerability (CVE-2024-26877)
Published Last modified Sources: Siemens ProductCERT, SUSE, Debian, CVE.org, EUVD, BSI
What is affected, what to do
In the Linux kernel, the following vulnerability has been resolved: crypto: xilinx - call finalize with bh disabled When calling crypto_finalize_request, BH should be disabled to avoid triggering the following calltrace: ------------[ cut here ]------------ WARNING: CPU: 2 PID: 74 at crypto/crypto_engine.c:58 crypto_finalize_request+0xa0/0x118 Modules linked in: cryptodev(O) CPU: 2 PID: 74 Comm: firmware:zynqmp Tainted: G O 6.8.0-rc1-yocto-standard #323 Hardware name: ZynqMP ZCU102 Rev1.0 (DT) pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : crypto_finalize_request+0xa0/0x118 lr : crypto_finalize_request+0x104/0x118 sp : ffffffc085353ce0 x29: ffffffc085353ce0 x28: 0000000000000000 x27: ffffff8808ea8688 x26: ffffffc081715038 x25: 0000000000000000 x24: ffffff880100db00 x23: ffffff880100da80 x22: 0000000000000000 x21: 0000000000000000 x20: ffffff8805b14000 x19: ffffff880100da80 x18: 0000000000010450 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000003 x13: 0000000000000000 x12: ffffff880100dad0 x11: 0000000000000000 x10: ffffffc0832dcd08 x9 : ffffffc0812416d8 x8 : 00000000000001f4 x7 : ffffffc0830d2830 x6 : 0000000000000001 x5 : ffffffc082091000 x4 : ffffffc082091658 x3 : 0000000000000000 x2 : ffffffc7f9653000 x1 : 0000000000000000 x0 : ffffff8802d20000 Call trace: crypto_finalize_request+0xa0/0x118 crypto_finalize_aead_request+0x18/0x30 zynqmp_handle_aes_req+0xcc/0x388 crypto_pump_work+0x168/0x2d8 kthread_worker_fn+0xfc/0x3a0 kthread+0x118/0x138 ret_from_fork+0x10/0x20 irq event stamp: 40 hardirqs last enabled at (39): [<ffffffc0812416f8>] _raw_spin_unlock_irqrestore+0x70/0xb0 hardirqs last disabled at (40): [<ffffffc08122d208>] el1_dbg+0x28/0x90 softirqs last enabled at (36): [<ffffffc080017dec>] kernel_neon_begin+0x8c/0xf0 softirqs last disabled at (34): [<ffffffc080017dc0>] kernel_neon_begin+0x60/0xf0 ---[ end trace 0000000000000000 ]---
Update Linux Kernel to version 5.10.214, Linux Kernel to version 5.15.153, Linux Kernel to version 6.1.83.
- Affected
- Linux Kernel
lt 5.7..5.10.214 - Linux Kernel
lt 5.11..5.15.153 - Linux Kernel
lt 5.16..6.1.83 - Linux Kernel
lt 6.2..6.6.23 - Linux Kernel
lt 6.7..6.7.11 - Linux Kernel
lt 6.8..6.8.2
- Linux Kernel
- Fixed in
- Linux Kernel
5.10.214 - Linux Kernel
5.15.153 - Linux Kernel
6.1.83 - Linux Kernel
6.6.23 - Linux Kernel
6.7.11 - Linux Kernel
6.8.2 - Linux Kernel
6.9
- Linux Kernel
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Metrics
9.8
XIEM Effective CVSS
Highest available CVSS rating from NVD and vendor data.
Source: Vendor (CNA), CVSS v3
9.8
CVSS v3
Severity Critical on the scale from 0 to 10.
Source: Siemens ProductCERT, SUSE, Debian, CVE.org, EUVD, BSI
0.7 %
EPSS score
Low — model estimates < 1% exploitation likelihood.
Source: FIRST EPSS, percentile 54.8
Show all metrics
- Severity
- Critical
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 77.69 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
XIEM Effective CVSS
XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.
Read in glossary- 9.8 Methodology
CVSS v3
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 9.8
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 0.7 %
- Low — model estimates < 1% exploitation likelihood.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 54.8
- High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
- CISA assessment (SSVC)
- Exploitation: none known · not automatable · Technical impact: partial
- Source: CISA Vulnrichment, as of 10 September 2024
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: xilinx - call finalize with bh disabled When calling crypto_finalize_request, BH should be disabled to avoid triggering the following calltrace: ------------[ cut here ]------------ WARNING: CPU: 2 PID: 74 at crypto/crypto_engine.c:58 crypto_finalize_request+0xa0/0x118 Modules linked in: cryptodev(O) CPU: 2 PID: 74 Comm: firmware:zynqmp Tainted: G O 6.8.0-rc1-yocto-standard #323 Hardware name: ZynqMP ZCU102 Rev1.0 (DT) pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : crypto_finalize_request+0xa0/0x118 lr : crypto_finalize_request+0x104/0x118 sp : ffffffc085353ce0 x29: ffffffc085353ce0 x28: 0000000000000000 x27: ffffff8808ea8688 x26: ffffffc081715038 x25: 0000000000000000 x24: ffffff880100db00 x23: ffffff880100da80 x22: 0000000000000000 x21: 0000000000000000 x20: ffffff8805b14000 x19: ffffff880100da80 x18: 0000000000010450 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000003 x13: 0000000000000000 x12: ffffff880100dad0 x11: 0000000000000000 x10: ffffffc0832dcd08 x9 : ffffffc0812416d8 x8 : 00000000000001f4 x7 : ffffffc0830d2830 x6 : 0000000000000001 x5 : ffffffc082091000 x4 : ffffffc082091658 x3 : 0000000000000000 x2 : ffffffc7f9653000 x1 : 0000000000000000 x0 : ffffff8802d20000 Call trace: crypto_finalize_request+0xa0/0x118 crypto_finalize_aead_request+0x18/0x30 zynqmp_handle_aes_req+0xcc/0x388 crypto_pump_work+0x168/0x2d8 kthread_worker_fn+0xfc/0x3a0 kthread+0x118/0x138 ret_from_fork+0x10/0x20 irq event stamp: 40 hardirqs last enabled at (39): [<ffffffc0812416f8>] _raw_spin_unlock_irqrestore+0x70/0xb0 hardirqs last disabled at (40): [<ffffffc08122d208>] el1_dbg+0x28/0x90 softirqs last enabled at (36): [<ffffffc080017dec>] kernel_neon_begin+0x8c/0xf0 softirqs last disabled at (34): [<ffffffc080017dc0>] kernel_neon_begin+0x60/0xf0 ---[ end trace 0000000000000000 ]---
Source: siemens_advisory, suse_csaf, Debian Security Advisories, NVD (NIST), ENISA EUVD, cvelistv5, BSI CSAF, BSI WID Portal
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| Linux | Linux |
|
|
Vendors and products
Affected operating systems
| Linux | debian | debian_linux | 10.0 |
| Linux | debian | linux | bullseye |
| Linux | linux | linux_kernel | — |
References & sources
- git.kernel.orgstable/c/8a01335aedc50a66d04dd39203c89f4bc8042596euvd
- git.kernel.orgstable/c/03e6d4e948432a61b35783323b6ab2be071d2619euvd
- git.kernel.orgstable/c/a71f66bd5f7b9b35a8aaa49e29565eca66299399euvd
- git.kernel.orgstable/c/23bc89fdce71124cd2126fc919c7076e7cb489cfeuvd
- git.kernel.orgstable/c/9db89b1fb85557892e6681724b367287de5f9f20euvd
- git.kernel.orgstable/c/dbf291d8ffffb70f48286176a15c6c54f0bb0743euvd
- git.kernel.orgstable/c/a853450bf4c752e664abab0b2fad395b7ad7701ceuvd
- lists.debian.orgdebian-lts-announce/2024/06/msg00017.htmlx_transferred
- Siemens ProductCERTproductcert/html/ssa-265688.html
Changes to this CVE
Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).
Record modifiedSiemens ADP
Show 3 original changes
Individual changes of this event as published by NVD Type Action Before After Affected versions (publisher) added —Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2024/26xxx/CVE-2024-26877.json">CVE-2024-26877</a>Reference added —https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlReference removed https://cert-portal.siemens.com/productcert/html/ssa-265688.html—Source identifier: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Record modifiedLinux
New references:- https://git.kernel.org/stable/c/03e6d4e948432a61b35783323b6ab2be071d2619
- https://git.kernel.org/stable/c/23bc89fdce71124cd2126fc919c7076e7cb489cf
- https://git.kernel.org/stable/c/8a01335aedc50a66d04dd39203c89f4bc8042596
- https://git.kernel.org/stable/c/9db89b1fb85557892e6681724b367287de5f9f20
and 3 more references
Show 21 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://git.kernel.org/stable/c/03e6d4e948432a61b35783323b6ab2be071d2619Reference added —https://git.kernel.org/stable/c/23bc89fdce71124cd2126fc919c7076e7cb489cfReference added —https://git.kernel.org/stable/c/8a01335aedc50a66d04dd39203c89f4bc8042596Reference added —https://git.kernel.org/stable/c/9db89b1fb85557892e6681724b367287de5f9f20Reference added —https://git.kernel.org/stable/c/a71f66bd5f7b9b35a8aaa49e29565eca66299399Reference added —https://git.kernel.org/stable/c/a853450bf4c752e664abab0b2fad395b7ad7701cReference added —https://git.kernel.org/stable/c/dbf291d8ffffb70f48286176a15c6c54f0bb0743Reference removed https://git.kernel.org/stable/c/03e6d4e948432a61b35783323b6ab2be071d2619—Reference removed https://git.kernel.org/stable/c/23bc89fdce71124cd2126fc919c7076e7cb489cf—Reference removed https://git.kernel.org/stable/c/8a01335aedc50a66d04dd39203c89f4bc8042596—Reference removed https://git.kernel.org/stable/c/9db89b1fb85557892e6681724b367287de5f9f20—Reference removed https://git.kernel.org/stable/c/a71f66bd5f7b9b35a8aaa49e29565eca66299399—Reference removed https://git.kernel.org/stable/c/a853450bf4c752e664abab0b2fad395b7ad7701c—Reference removed https://git.kernel.org/stable/c/dbf291d8ffffb70f48286176a15c6c54f0bb0743—Reference type removed https://git.kernel.org/stable/c/03e6d4e948432a61b35783323b6ab2be071d2619 Types: Patch—Reference type removed https://git.kernel.org/stable/c/23bc89fdce71124cd2126fc919c7076e7cb489cf Types: Patch—Reference type removed https://git.kernel.org/stable/c/8a01335aedc50a66d04dd39203c89f4bc8042596 Types: Patch—Reference type removed https://git.kernel.org/stable/c/9db89b1fb85557892e6681724b367287de5f9f20 Types: Patch—Reference type removed https://git.kernel.org/stable/c/a71f66bd5f7b9b35a8aaa49e29565eca66299399 Types: Patch—Reference type removed https://git.kernel.org/stable/c/a853450bf4c752e664abab0b2fad395b7ad7701c Types: Patch—Reference type removed https://git.kernel.org/stable/c/dbf291d8ffffb70f48286176a15c6c54f0bb0743 Types: Patch—Source identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Record modifiedCVE Program
New references:- https://git.kernel.org/stable/c/03e6d4e948432a61b35783323b6ab2be071d2619
- https://git.kernel.org/stable/c/23bc89fdce71124cd2126fc919c7076e7cb489cf
- https://git.kernel.org/stable/c/8a01335aedc50a66d04dd39203c89f4bc8042596
- https://git.kernel.org/stable/c/9db89b1fb85557892e6681724b367287de5f9f20
and 4 more references
Show 24 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://git.kernel.org/stable/c/03e6d4e948432a61b35783323b6ab2be071d2619Reference added —https://git.kernel.org/stable/c/23bc89fdce71124cd2126fc919c7076e7cb489cfReference added —https://git.kernel.org/stable/c/8a01335aedc50a66d04dd39203c89f4bc8042596Reference added —https://git.kernel.org/stable/c/9db89b1fb85557892e6681724b367287de5f9f20Reference added —https://git.kernel.org/stable/c/a71f66bd5f7b9b35a8aaa49e29565eca66299399Reference added —https://git.kernel.org/stable/c/a853450bf4c752e664abab0b2fad395b7ad7701cReference added —https://git.kernel.org/stable/c/dbf291d8ffffb70f48286176a15c6c54f0bb0743Reference added —https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlReference removed https://git.kernel.org/stable/c/03e6d4e948432a61b35783323b6ab2be071d2619—Reference removed https://git.kernel.org/stable/c/23bc89fdce71124cd2126fc919c7076e7cb489cf—Reference removed https://git.kernel.org/stable/c/8a01335aedc50a66d04dd39203c89f4bc8042596—Reference removed https://git.kernel.org/stable/c/9db89b1fb85557892e6681724b367287de5f9f20—Reference removed https://git.kernel.org/stable/c/a71f66bd5f7b9b35a8aaa49e29565eca66299399—Reference removed https://git.kernel.org/stable/c/a853450bf4c752e664abab0b2fad395b7ad7701c—Reference removed https://git.kernel.org/stable/c/dbf291d8ffffb70f48286176a15c6c54f0bb0743—Reference removed https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html—Reference type removed https://git.kernel.org/stable/c/03e6d4e948432a61b35783323b6ab2be071d2619 Types: Patch—Reference type removed https://git.kernel.org/stable/c/23bc89fdce71124cd2126fc919c7076e7cb489cf Types: Patch—Reference type removed https://git.kernel.org/stable/c/8a01335aedc50a66d04dd39203c89f4bc8042596 Types: Patch—Reference type removed https://git.kernel.org/stable/c/9db89b1fb85557892e6681724b367287de5f9f20 Types: Patch—Reference type removed https://git.kernel.org/stable/c/a71f66bd5f7b9b35a8aaa49e29565eca66299399 Types: Patch—Reference type removed https://git.kernel.org/stable/c/a853450bf4c752e664abab0b2fad395b7ad7701c Types: Patch—Reference type removed https://git.kernel.org/stable/c/dbf291d8ffffb70f48286176a15c6c54f0bb0743 Types: Patch—Reference type removed https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Third Party Advisory—Source identifier: af854a3a-2127-422b-91ae-364da2661108
Record modifiedLinux
CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show the original change
Individual changes of this event as published by NVD Type Action Before After CVSS added —AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSource identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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<a href="https://intel.neosec.eu/en/cve/CVE-2024-26877"><img src="https://intel.neosec.eu/badge/cve/CVE-2024-26877.svg?lang=en" alt="CVE-2024-26877 – NEOSEC Intel" height="20"></a>