vt: Clear selection before changing the font
Priority LOW 36CWE-125Published · Updated
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: 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: vt: Clear selection before changing the font When changing the console font with ioctl(KDFONTOP) the new font size can be bigger than the previous font. A previous selection may thus now be outside of the new screen size and thus trigger out-of-bounds accesses to graphics memory if the selection is removed in vc_do_resize(). Prevent such out-of-memory accesses by dropping the selection before the various con_font_set() console handlers are called.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00274 19th percentileScored 2026-11-07
Fix Partial Linux (Linux): 3.3, 3.11, 3.13 +13Red Hat: 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 | 3.2.85 to before 3.3; 3.10.105 to before 3.11; 3.12.68 to before 3.13; 3.16.40 to before 3.17; 3.18.45 to before 3.19; 4.1.36 to before 4.2; 4.4.31 to before 4.5; 4.8.7 to before 4.9 | 3.3, 3.11, 3.13, 3.17, 3.19, 4.2, 4.5, 4.9 | Patch available | CNA |
| Linux | Linux | 4.9 and later | 4.9.328, 4.14.293, 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8, 6.0 | Patch available | CNA |
- Linux VendorLinux Affected 3.2.85 to before 3.3; 3.10.105 to before 3.11; 3.12.68 to before 3.13; 3.16.40 to before 3.17; 3.18.45 to before 3.19; 4.1.36 to before 4.2; 4.4.31 to before 4.5; 4.8.7 to before 4.9 Fixed in 3.3, 3.11, 3.13, 3.17, 3.19, 4.2, 4.5, 4.9 Patch available CNA
- Linux VendorLinux Affected 4.9 and later Fixed in 4.9.328, 4.14.293, 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8, 6.0 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 4.9.328; 4.10 to before 4.14.293; 4.15 to before 4.19.258; 4.20 to before 5.4.213; 5.5 to before 5.10.142; 5.11 to before 5.15.66; 5.16 to before 5.19.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* | 6.0 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* | 6.0 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* | 6.0 rc3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 4.9.328; 4.10 to before 4.14.293; 4.15 to before 4.19.258; 4.20 to before 5.4.213; 5.5 to before 5.10.142; 5.11 to before 5.15.66; 5.16 to before 5.19.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* Versions 6.0 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* Versions 6.0 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* Versions 6.0 rc3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 3.3, 3.11, 3.13, 3.17, 3.19, 4.2, 4.5, 4.9
- Fix · CNA Linux (Linux) Fixed in 4.9.328, 4.14.293, 4.19.258, 5.4.213, 5.10.142, 5.15.66, 5.19.8, 6.0
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 yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49948
- 2026-10-03 Alias added: GHSA-r6pw-rw8p-5cr9
- 2026-10-16 CISA SSVC decision points changed
References
Patch 8
- https://git.kernel.org/stable/c/c555cf04684fde39b5b0dd9fd80730030ee10c4a
- https://git.kernel.org/stable/c/e9ba4611ddf676194385506222cce7b0844e708e
- https://git.kernel.org/stable/c/f74b4a41c5d7c9522469917e3072e55d435efd9e
- https://git.kernel.org/stable/c/1cf1930369c9dc428d827b60260c53271bff3285
- https://git.kernel.org/stable/c/989201bb8c00b222235aff04e6200230d29dc7bb
- https://git.kernel.org/stable/c/2535431ae967ad17585513649625fea7db28d4db
- https://git.kernel.org/stable/c/c904fe03c4bd1f356a58797d39e2a5d0ca15cefc
- https://git.kernel.org/stable/c/566f9c9f89337792070b5a6062dff448b3e7977f
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- 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-2022-49948 · CVE Program
- CVE-2022-49948 · NVD
- FIRST EPSS
- GHSA-r6pw-rw8p-5cr9 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49948 · Red Hat security data · CC BY 4.0
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