# CVE-2023-52979: linux: In the Linux kernel, the following vulnerability has been resolved: squashfs: harden sanity check in squashfs_read_x... CVE-2023-52979 is fixed in 20 products on 1 platform, first by ALAS2023-2023-132, released March 11, 2023. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2023-52979 - Priority: Routine - CVSS: 5.5 (medium) - EPSS: n/a - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Mar 11, 2023 ## Description In the Linux kernel, the following vulnerability has been resolved: squashfs: harden sanity check in squashfs_read_xattr_id_table While mounting a corrupted filesystem, a signed integer '*xattr_ids' can become less than zero. This leads to the incorrect computation of 'len' and 'indexes' values which can cause null-ptr-deref in copy_bio_to_actor() or out-of-bounds accesses in the next sanity checks inside squashfs_read_xattr_id_table(). Found by Linux Verification Center (linuxtesting.org) with Syzkaller. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | bpftool-debuginfo amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-debuginfo amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-devel amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-headers amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-libbpf amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-libbpf-devel amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-libbpf-static amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-livepatch-6.1.12-17.42 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-tools amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-tools-debuginfo amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | kernel-tools-devel amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | linux Debian 11.6 (bullseye) | 5.10.178-1 | [DEBIAN-CVE-2023-52979](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52979.md) | Mar 27, 2025 | | Linux | linux Debian 12.15 (bookworm) | 6.1.11-1 | [DEBIAN-CVE-2023-52979](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52979.md) | Mar 27, 2025 | | Linux | linux Debian 13.5 (trixie) | 6.1.11-1 | [DEBIAN-CVE-2023-52979](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52979.md) | Mar 27, 2025 | | Linux | linux Debian 14 | 6.1.11-1 | [DEBIAN-CVE-2023-52979](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52979.md) | Mar 27, 2025 | | Linux | perf amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | perf-debuginfo amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | python3-perf amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | | Linux | python3-perf-debuginfo amzn 2023 | 6.1.12-17.42.amzn2023 | [ALAS2023-2023-132](https://patchblox.com/security/data/fix/linux/alas2023-2023-132.md) | Mar 11, 2023 | --- Data as of 2026-11-08T19:12:23Z UTC. 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