Description
An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.19.6-1 | — |
| Debian 13 | linux | 5.19.6-1 | — |
| Debian 12 | linux | 5.19.6-1 | — |
| Debian 11 | linux | 5.10.149-1 | DSA-5257-1 |
| Debian 10 | linux | 4.19.260-1 | DLA-3131-1 |
| Debian 10 | linux-5.10 | 5.10.149-2~deb10u1 | DLA-3173-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-57.63 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1027.31 | USN-5792-2 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1030.37 | USN-5792-2 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1030.37.1 | USN-5792-2 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1026.33 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1024.29 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1012.16 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1022.25 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1023.28 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1025.30 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1015.15 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1026.32 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1022.24 | USN-5792-1 |
| Ubuntu 22.04 LTS | linux-riscv +4 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-136.153 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1093.101 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-aws-5.15 +1 | 5.15.0-1027.31~20.04.1 | USN-5792-2 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1100.106 | USN-5791-2 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1030.37~20.04.1 | USN-5792-2 |
| Ubuntu 20.04 LTS | linux-azure-fde | 5.4.0-1100.106+cvm1.1 | USN-5791-3 |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1054.60 | USN-5815-1 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1097.106 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1027.34~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1091.98 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-gke-5.15 | 5.15.0-1027.32~20.04.1 | USN-5877-1 |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1061.65 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1012.16~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 | 5.15.0-57.63~20.04.1 | USN-5792-1 |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1041.46 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1023.28~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1010.12 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1083.89 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-lowlatency-hwe-5.15 | 5.15.0-58.64~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1091.100 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1027.33~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1078.89 | USN-5791-1 |
| Ubuntu 20.04 LTS | linux-riscv +23 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-204.215 | USN-5854-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1150.163 | USN-5854-1 |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1093.102~18.04.2 | USN-5791-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1161.176 | USN-5865-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1100.106~18.04.1 | USN-5791-3 |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1060.65 | USN-5861-1 |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1145.161 | USN-5854-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1097.106~18.04.1 | USN-5791-1 |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-136.153~18.04.1 | USN-5791-1 |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1041.46~18.04.1 | USN-5791-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1135.140 | USN-5854-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1114.125 | USN-5854-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1091.100~18.04.1 | USN-5791-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1078.89~18.04.1 | USN-5791-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1127.135 | USN-5854-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1145.155 | USN-5862-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1029.32 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1093.101+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1100.106+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1069.78 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1097.106+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2089.95 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2070.76 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1107.118 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2054.59 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1151.164~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1162.177~16.04.1 | USN-5975-1 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1146.162~16.04.1 | USN-6007-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-206.217~16.04.1 | USN-5883-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1115.126~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux +2 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1162.177~14.04.1 | USN-5924-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.10-15.42 | 1.0-0.amzn2023 | ALAS2023-2023-070 |
| Amazon Linux 2023 | perf +12 | 6.1.10-15.42.amzn2023 | ALAS2023-2023-070 |
| Amazon Linux 2 | kernel-livepatch-4.14.296-222.539 | 1.0-0.amzn2 | ALAS2-2022-1876 |
| Amazon Linux 2 | perf +8 | 4.14.296-222.539.amzn2 | ALAS2-2022-1876 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.70.1-1 | — |
Advisories 26
- USN-6007-1 linux-gcp vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5975-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5924-1 linux-azure, linux-azure, linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5865-1 linux-azure-4.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5861-1 linux-dell300x vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5792-1 linux, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi, vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5877-1 linux-gke-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5883-1 linux-hwe vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5854-1 linux, linux-aws, linux-gcp-4.15, linux-kvm, linux-oracle, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5862-1 linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5792-2 linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5791-3 linux-azure-5.4, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-5815-1 linux-bluefield vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-5791-1 linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gkeop, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-5791-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- DSA-5257-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3131-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3173-1 linux-5.10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- ALAS2-2022-1876 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Feb 8, 2026
- ICSA-25-044-09 Siemens SCALANCE W700 IEEE 802.11ax CISA ICS & IT advisories · May 6, 2025
- NCSC-2025-0061 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Feb 14, 2025
- NCSC-2025-0051 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Feb 11, 2025
- SSA-769027 SSA-769027: Multiple Vulnerabilities fixed in SCALANCE W700 IEEE 802.11ax devices before V3.0.0 Siemens ProductCERT · Feb 11, 2025
- ALAS2023-2023-070 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 10, 2024
- WID-SEC-2023-0292 Android Patchday Februar 2023 BSI CERT-Bund (WID) · Jun 1, 2023
- WID-SEC-2022-1287 Linux Kernel: Schwachstelle ermöglicht nicht spezifizierten Angriff BSI CERT-Bund (WID) · Apr 26, 2023
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
- https://github.com/torvalds/linux/commit/a09d2d00af53b43c6f11e6ab3cb58443c2cac8a7
- [debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update mailing-list
- DSA-5257 vendor-advisory
- [debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security update mailing-list
- https://lore.kernel.org/all/YylaC1wHHyLw22D3%40kadam/T/