filelock: Fix fcntl/close race recovery compat path
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 5 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: filelock: Fix fcntl/close race recovery compat path When I wrote commit 3cad1bc01041 ("filelock: Remove locks reliably when fcntl/close race is detected"), I missed that there are two copies of the code I was patching: The normal version, and the version for 64-bit offsets on 32-bit kernels. Thanks to Greg KH for stumbling over this while doing the stable backport... Apply exactly the same fix to the compat path for 32-bit kernels.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.13 and later | 4.19.319, 5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12, 6.10.2, 6.11 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.13 and later Fixed in 4.19.319, 5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12, 6.10.2, 6.11 Patch available CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 2.6.14 to before 4.19.319; 4.20 to before 5.4.281; 5.5 to before 5.10.223; 5.11 to before 5.15.164; 5.16 to before 6.1.102; 6.2 to before 6.6.43; 6.7 to before 6.9.12; 6.10 to before 6.10.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.13:-:*:*:*:*:*:* | 2.6.13 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.13:rc4:*:*:*:*:*:* | 2.6.13 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.13:rc5:*:*:*:*:*:* | 2.6.13 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.13:rc6:*:*:*:*:*:* | 2.6.13 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.13:rc7:*:*:*:*:*:* | 2.6.13 rc7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.14 to before 4.19.319; 4.20 to before 5.4.281; 5.5 to before 5.10.223; 5.11 to before 5.15.164; 5.16 to before 6.1.102; 6.2 to before 6.6.43; 6.7 to before 6.9.12; 6.10 to before 6.10.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.13:-:*:*:*:*:*:* Versions 2.6.13 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.13:rc4:*:*:*:*:*:* Versions 2.6.13 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.13:rc5:*:*:*:*:*:* Versions 2.6.13 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.13:rc6:*:*:*:*:*:* Versions 2.6.13 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.13:rc7:*:*:*:*:*:* Versions 2.6.13 rc7 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.319, 5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12, 6.10.2, 6.11
Red Hat 1 advisory
- RHSA-2024:9315 Released 2024-11-12 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-cross-headers-5.14.0-503.11.1.el9_5, kernel-tools-libs-devel-5.14.0-503.11.1.el9_5, libperf-5.14.0-503.11.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.11.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.11.1.el9_5, kernel-64k-devel-5.14.0-503.11.1.el9_5 +12
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.11.1.el9_5, kernel-5.14.0-503.11.1.el9_5, kernel-64k-5.14.0-503.11.1.el9_5 +30
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.11.1.el9_5, kernel-rt-core-5.14.0-503.11.1.el9_5, kernel-rt-debug-5.14.0-503.11.1.el9_5 +11
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:9315 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2024:9315 |
Not affected: 3 products
- Red Hat CodeReady Linux Builder (v. 9)
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux AppStream (v. 9)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-41020
- 2026-10-03 Alias added: GHSA-j29f-xrw6-fm6c
- 2026-10-29 Affected versions changed · Red Hat
References
Patch 9
- https://git.kernel.org/stable/c/a561145f3ae973ebf3e0aee41624e92a6c5cb38d
- https://git.kernel.org/stable/c/4c43ad4ab41602201d34c66ac62130fe339d686f
- https://git.kernel.org/stable/c/911cc83e56a2de5a40758766c6a70d6998248860
- https://git.kernel.org/stable/c/53e21cfa68a7d12de378b7116c75571f73e0dfa2
- https://git.kernel.org/stable/c/f4d0775c6e2f1340ca0725f0337de149aaa989ca
- https://git.kernel.org/stable/c/73ae349534ebc377328e7d21891e589626c6e82c
- https://git.kernel.org/stable/c/5b0af8e4c70e4b884bb94ff5f0cd49ecf1273c02
- https://git.kernel.org/stable/c/ed898f9ca3fa32c56c858b463ceb9d9936cc69c4
- https://git.kernel.org/stable/c/f8138f2ad2f745b9a1c696a05b749eabe44337ea
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- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2024-41020 · CVE Program
- CVE-2024-41020 · NVD
- FIRST EPSS
- GHSA-j29f-xrw6-fm6c · GitHub Advisory Database · CC BY 4.0
- CVE-2024-41020 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences