vt: fix unicode buffer corruption when deleting characters
Priority LOW 26CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 17 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: vt: fix unicode buffer corruption when deleting characters This is the same issue that was fixed for the VGA text buffer in commit 39cdb68c64d8 ("vt: fix memory overlapping when deleting chars in the buffer"). The cure is also the same i.e. replace memcpy() with memmove() due to the overlaping buffers.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00915 60th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.312, 5.4.274, 5.10.215 +5Red Hat: 6 advisoriesRed Hat: 17 fixed, 3 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 | 3.7 and later | 4.19.312, 5.4.274, 5.10.215, 5.15.154, 6.1.84, 6.6.24, 6.7.12, 6.8 | Patch available | CNA |
- Linux VendorLinux Affected 3.7 and later Fixed in 4.19.312, 5.4.274, 5.10.215, 5.15.154, 6.1.84, 6.6.24, 6.7.12, 6.8 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.7 to before 4.19.312; 4.20 to before 5.4.274; 5.5 to before 5.10.215; 5.11 to before 5.15.154; 5.16 to before 6.1.84; 6.2 to before 6.6.24; 6.7 to before 6.7.12 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* | 6.8 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* | 6.8 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* | 6.8 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:* | 6.8 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:* | 6.8 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:* | 6.8 rc6 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.7 to before 4.19.312; 4.20 to before 5.4.274; 5.5 to before 5.10.215; 5.11 to before 5.15.154; 5.16 to before 6.1.84; 6.2 to before 6.6.24; 6.7 to before 6.7.12 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* Versions 6.8 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* Versions 6.8 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* Versions 6.8 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:* Versions 6.8 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:* Versions 6.8 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:* Versions 6.8 rc6 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 4.19.312, 5.4.274, 5.10.215, 5.15.154, 6.1.84, 6.6.24, 6.7.12, 6.8
Red Hat 6 advisories
- RHSA-2024:10262 Released 2024-11-26 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.81.1.el8_8
- Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.81.1.el8_8, kernel-4.18.0-477.81.1.el8_8, kernel-abi-stablelists-4.18.0-477.81.1.el8_8 +19
- RHSA-2024:6297 Released 2024-09-04 · Red Hat rating Moderatekernel security update
- Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.121.1.el8_6, kernel-4.18.0-372.121.1.el8_6, kernel-abi-stablelists-4.18.0-372.121.1.el8_6 +13
- Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.121.1.el8_6, kernel-4.18.0-372.121.1.el8_6, kernel-abi-stablelists-4.18.0-372.121.1.el8_6 +18
- Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.121.1.el8_6, kernel-4.18.0-372.121.1.el8_6, kernel-abi-stablelists-4.18.0-372.121.1.el8_6 +13
- RHSA-2024:5363 Released 2024-08-15 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.31.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.31.1.el9_4, kernel-64k-devel-5.14.0-427.31.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.31.1.el9_4, kernel-5.14.0-427.31.1.el9_4, kernel-64k-5.14.0-427.31.1.el9_4 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.31.1.el9_4, libperf-5.14.0-427.31.1.el9_4
- Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.31.1.el9_4, kernel-rt-core-5.14.0-427.31.1.el9_4, kernel-rt-debug-5.14.0-427.31.1.el9_4 +11
- Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.31.1.el9_4, kernel-rt-core-5.14.0-427.31.1.el9_4, kernel-rt-debug-5.14.0-427.31.1.el9_4 +9
Show 3 more Red Hat advisories
- RHSA-2024:5101 Released 2024-08-08 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.16.1.el8_10, kernel-4.18.0-553.16.1.el8_10, kernel-abi-stablelists-4.18.0-553.16.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.16.1.el8_10
- RHSA-2024:5066 Released 2024-08-07 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.77.1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.77.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.77.1.el9_2, kernel-64k-devel-5.14.0-284.77.1.el9_2 +9
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.77.1.el9_2, kernel-5.14.0-284.77.1.el9_2, kernel-64k-5.14.0-284.77.1.el9_2 +29
- RHSA-2024:5067 Released 2024-08-07 · Red Hat rating Moderatekernel-rt security update
- Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-core-5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-5.14.0-284.77.1.rt14.362.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-core-5.14.0-284.77.1.rt14.362.el9_2, kernel-rt-debug-5.14.0-284.77.1.rt14.362.el9_2 +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 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder EUS (v.8.8) | Fixed | RHSA-2024:10262 |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:5066 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:5363 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:5066 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:5101 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:5363 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.6) | Fixed | RHSA-2024:6297 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.6) | Fixed | RHSA-2024:6297 |
| Red Hat Enterprise Linux BaseOS EUS (v.8.8) | Fixed | RHSA-2024:10262 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:5066 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.6) | Fixed | RHSA-2024:6297 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:5101 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:5363 |
| Red Hat Enterprise Linux NFV (v. 9) | Fixed | RHSA-2024:5363 |
| Red Hat Enterprise Linux RT (v. 9) | Fixed | RHSA-2024:5363 |
| Red Hat Enterprise Linux Real Time EUS (v.9.2) | Fixed | RHSA-2024:5067 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) | Fixed | RHSA-2024:5067 |
Not affected: 7 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux AppStream (v. 9)
- Red Hat Enterprise Linux AppStream EUS (v.9.2)
- Red Hat Enterprise Linux BaseOS AUS (v.8.6)
- Red Hat Enterprise Linux BaseOS E4S (v.8.6)
- Red Hat Enterprise Linux BaseOS TUS (v.8.6)
- Red Hat Enterprise Linux CRB (v. 9)
Timeline
- 2026-10-02 Threatist record created from CVE-2024-35823
- 2026-10-03 Alias added: GHSA-7jj8-vg94-4wqj
- 2026-11-05 Affected versions changed · Red Hat
References
Patch 8
- https://git.kernel.org/stable/c/fc7dfe3d123f00e720be80b920da287810a1f37d
- https://git.kernel.org/stable/c/ff7342090c1e8c5a37015c89822a68b275b46f8a
- https://git.kernel.org/stable/c/1ce408f75ccf1e25b3fddef75cca878b55f2ac90
- https://git.kernel.org/stable/c/0190d19d7651c08abc187dac3819c61b726e7e3f
- https://git.kernel.org/stable/c/994a1e583c0c206c8ca7d03334a65b79f4d8bc51
- https://git.kernel.org/stable/c/7529cbd8b5f6697b369803fe1533612c039cabda
- https://git.kernel.org/stable/c/2933b1e4757a0a5c689cf48d80b1a2a85f237ff1
- https://git.kernel.org/stable/c/1581dafaf0d34bc9c428a794a22110d7046d186d
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- 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-2024-35823 · CVE Program
- CVE-2024-35823 · NVD
- FIRST EPSS
- GHSA-7jj8-vg94-4wqj · GitHub Advisory Database · CC BY 4.0
- CVE-2024-35823 · 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