Description
In the Linux kernel, the following vulnerability has been resolved:
udf: Fix bogus checksum computation in udf_rename()
Syzbot reports uninitialized memory access in udf_rename() when updating
checksum of '..' directory entry of a moved directory. This is indeed
true as we pass on-stack diriter.fi to the udf_update_tag() and because
that has only struct fileIdentDesc included in it and not the impUse or
name fields, the checksumming function is going to checksum random stack
contents beyond the end of the structure. This is actually harmless
because the following udf_fiiter_write_fi() will recompute the checksum
from on-disk buffers where everything is properly included. So all that
is needed is just removing the bogus calculation.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 6.3 | 6.6.44 |
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 | 6.10.3-1 | — |
| Debian 13 | linux | 6.10.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux | 6.8.0-50.51 | USN-7154-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1020.22 | USN-7154-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1020.23 | USN-7196-1 |
| Ubuntu 24.04 LTS | linux-gcp +1 | 6.8.0-1019.21 | USN-7155-1, USN-7154-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1015.19 | USN-7154-1 |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1002.4 | USN-7156-1 |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1017.17 | USN-7154-1 |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1019.21.1 | USN-7155-1 |
| Ubuntu 24.04 LTS | linux-oem-6.8 | 6.8.0-1018.18 | USN-7154-1 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1017.18 | USN-7154-1 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1016.18 | USN-7154-1 |
| Ubuntu 24.04 LTS | linux-riscv +1 | 6.8.0-50.51.1 | USN-7154-1 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1020.22~22.04.1 | USN-7154-1 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1020.23~22.04.1 | USN-7196-1 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 +1 | 6.8.0-1019.21~22.04.1 | USN-7155-1, USN-7154-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-50.51~22.04.1 | USN-7154-2 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1017.18~22.04.1 | USN-7154-1 |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.8 +1 | 6.8.0-50.51.1~22.04.1 | USN-7154-1 |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2015.16 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1013.14 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | kernel-64kb +4 | 6.4.0-150600.23.25.1 | SUSE-SU-2024:3561-1 |
| SLES 15 SP6 | kernel-azure +2 | 6.4.0-150600.8.14.1 | SUSE-SU-2024:3551-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.25.1.150600.12.10.2 | SUSE-SU-2024:3561-1 |
| SLES 15 SP6 | kernel-docs +1 | 6.4.0-150600.23.25.2 | SUSE-SU-2024:3561-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.0 | kernel-default-base | 6.4.0-17.1.1.51 | SUSE-SU-2025:20073-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_3 +1 | 1-1.2 | SUSE-SU-2025:20077-1, SUSE-SU-2025:20073-1 |
| SLE Micro 6.0 | kernel-rt +1 | 6.4.0-11.1 | SUSE-SU-2025:20077-1 |
| SLE Micro 6.0 | kernel-source +2 | 6.4.0-20.1 | SUSE-SU-2025:20073-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.25.1 | SUSE-SU-2024:3561-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_4 | 1-150600.1.3.1 | SUSE-SU-2024:3564-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_5 | 1-150600.13.3.1 | SUSE-SU-2024:3561-1 |
| SUSE Real Time Module 15 SP6 | kernel-rt +3 | 6.4.0-150600.10.14.1 | SUSE-SU-2024:3564-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | dtb-aarch64 +8 | 6.4.0-150600.23.25.1 | SUSE-SU-2024:3561-1 |
| openSUSE Leap 15.6 | kernel-azure +2 | 6.4.0-150600.8.14.1 | SUSE-SU-2024:3551-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.25.1.150600.12.10.2 | SUSE-SU-2024:3561-1 |
| openSUSE Leap 15.6 | kernel-docs +1 | 6.4.0-150600.23.25.2 | SUSE-SU-2024:3561-1 |
| openSUSE Leap 15.6 | kernel-rt +3 | 6.4.0-150600.10.14.1 | SUSE-SU-2024:3564-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | bpftool +13 | 5.15.0-303.171.5.2.el9uek | ELSA-2024-12887 |
Advisories 12
- USN-7154-1 linux, linux-aws, linux-aws-6.8, linux-gcp, linux-gcp-6.8, linux-gke, linux-ibm, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-oem-6.8, linux-oracle, linux-oracle-6.8, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7155-1 linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7196-1 linux-azure, linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7156-1 linux-gkeop vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7154-2 linux-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- WID-SEC-2024-1875 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · May 14, 2026
- SUSE-SU-2025:20073-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20077-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2024:3551-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3561-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3564-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2024-12887 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Dec 18, 2024