block: initialize integrity buffer to zero before writing it to media
Priority LOW 24CWE-401Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 17 fixed, 2 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-401.
Summary
In the Linux kernel, the following vulnerability has been resolved: block: initialize integrity buffer to zero before writing it to media Metadata added by bio_integrity_prep is using plain kmalloc, which leads to random kernel memory being written media. For PI metadata this is limited to the app tag that isn't used by kernel generated metadata, but for non-PI metadata the entire buffer leaks kernel memory. Fix this by adding the __GFP_ZERO flag to allocations for writes.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00234 14th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.322, 5.4.284, 5.10.226 +5Red Hat: 6 advisoriesRed Hat: 17 fixed, 2 without a fix
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 | 2.6.27 and later | 4.19.322, 5.4.284, 5.10.226, 5.15.165, 6.1.103, 6.6.44, 6.10.3, 6.11 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.27 and later Fixed in 4.19.322, 5.4.284, 5.10.226, 5.15.165, 6.1.103, 6.6.44, 6.10.3, 6.11 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 2.6.27 to before 5.15.165; 5.16 to before 6.1.103; 6.2 to before 6.6.44; 6.7 to before 6.10.3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.27 to before 5.15.165; 5.16 to before 6.1.103; 6.2 to before 6.6.44; 6.7 to before 6.10.3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.322, 5.4.284, 5.10.226, 5.15.165, 6.1.103, 6.6.44, 6.10.3, 6.11
Red Hat 6 advisories
- RHSA-2024:10939 Released 2024-12-11 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-503.16.1.el9_5, libperf-5.14.0-503.16.1.el9_5
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-503.16.1.el9_5, kernel-64k-debug-devel-matched-5.14.0-503.16.1.el9_5, kernel-64k-devel-5.14.0-503.16.1.el9_5 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.4.0-503.16.1.el9_5, kernel-5.14.0-503.16.1.el9_5, kernel-64k-5.14.0-503.16.1.el9_5 +30
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-503.16.1.el9_5, kernel-rt-core-5.14.0-503.16.1.el9_5, kernel-rt-debug-5.14.0-503.16.1.el9_5 +9
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-503.16.1.el9_5, kernel-rt-core-5.14.0-503.16.1.el9_5, kernel-rt-debug-5.14.0-503.16.1.el9_5 +11
- RHSA-2024:10772 Released 2024-12-04 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.95.1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.95.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.95.1.el9_2, kernel-64k-devel-5.14.0-284.95.1.el9_2 +10
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.95.1.el9_2, kernel-5.14.0-284.95.1.el9_2, kernel-64k-5.14.0-284.95.1.el9_2 +29
- RHSA-2024:10773 Released 2024-12-04 · Red Hat rating Moderatekernel-rt security update
- Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.95.1.rt14.380.el9_2, kernel-rt-core-5.14.0-284.95.1.rt14.380.el9_2, kernel-rt-debug-5.14.0-284.95.1.rt14.380.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.95.1.rt14.380.el9_2, kernel-rt-core-5.14.0-284.95.1.rt14.380.el9_2, kernel-rt-debug-5.14.0-284.95.1.rt14.380.el9_2 +11
Show 3 more Red Hat advisories
- RHSA-2024:8856 Released 2024-11-05 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.27.1.el8_10, kernel-4.18.0-553.27.1.el8_10, kernel-abi-stablelists-4.18.0-553.27.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.27.1.el8_10
- RHSA-2024:8870 Released 2024-11-05 · Red Hat rating Moderatekernel-rt security update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.27.1.rt7.368.el8_10, kernel-rt-core-4.18.0-553.27.1.rt7.368.el8_10, kernel-rt-debug-4.18.0-553.27.1.rt7.368.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.27.1.rt7.368.el8_10, kernel-rt-core-4.18.0-553.27.1.rt7.368.el8_10, kernel-rt-debug-4.18.0-553.27.1.rt7.368.el8_10 +7
- RHSA-2024:8617 Released 2024-10-30 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.42.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.42.1.el9_4, kernel-64k-devel-5.14.0-427.42.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.42.1.el9_4, kernel-5.14.0-427.42.1.el9_4, kernel-64k-5.14.0-427.42.1.el9_4 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.42.1.el9_4, libperf-5.14.0-427.42.1.el9_4
- Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.42.1.el9_4, kernel-rt-core-5.14.0-427.42.1.el9_4, kernel-rt-debug-5.14.0-427.42.1.el9_4 +11
- Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.42.1.el9_4, kernel-rt-core-5.14.0-427.42.1.el9_4, kernel-rt-debug-5.14.0-427.42.1.el9_4 +9
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 CodeReady Linux Builder (v. 9) | Fixed | RHSA-2024:10939 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:10772 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:10939, RHSA-2024:8617 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:10772 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:8856 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:10939, RHSA-2024:8617 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:10772 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:8856 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:8617 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:8870 |
| Red Hat Enterprise Linux NFV (v. 9) | Fixed | RHSA-2024:8617 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:8870 |
| Red Hat Enterprise Linux RT (v. 9) | Fixed | RHSA-2024:8617 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2024:10939 |
| Red Hat Enterprise Linux Real Time EUS (v.9.2) | Fixed | RHSA-2024:10773 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2024:10939 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) | Fixed | RHSA-2024:10773 |
Not affected: 1 product
- Red Hat Enterprise Linux AppStream EUS (v.9.2)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-43854
- 2026-10-03 Alias added: GHSA-hqfw-8gwg-7r3q
- 2026-10-29 Affected versions changed · Red Hat
References
Patch 5
- https://git.kernel.org/stable/c/cf6b45ea7a8df0f61bded1dc4a8561ac6ad143d2
- https://git.kernel.org/stable/c/d418313bd8f55c079a7da12651951b489a638ac1
- https://git.kernel.org/stable/c/23a19655fb56f241e592041156dfb1c6d04da644
- https://git.kernel.org/stable/c/ebc0e91ba76dc6544fff9f5b66408b1982806a00
- https://git.kernel.org/stable/c/899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f
More Linux Kernel vulnerabilities
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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-2024-43854 · CVE Program
- CVE-2024-43854 · NVD
- FIRST EPSS
- GHSA-hqfw-8gwg-7r3q · GitHub Advisory Database · CC BY 4.0
- CVE-2024-43854 · 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