# CVE-2023-52646: linux: In the Linux kernel, the following vulnerability has been resolved: aio: fix mremap after fork null-deref Commit e4... CVE-2023-52646 is fixed in 20 products on 1 platform, first by ALAS2023-2023-127, released March 11, 2023. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2023-52646 - Priority: Routine - CVSS: 5.5 (medium) - EPSS: 0.0024 - 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: aio: fix mremap after fork null-deref Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced a null-deref if mremap is called on an old aio mapping after fork as mm->ioctx_table will be set to NULL. [jmoyer@redhat.com: fix 80 column issue] ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | bpftool-debuginfo amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-debuginfo amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-devel amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-headers amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-libbpf amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-libbpf-devel amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-libbpf-static amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-livepatch-6.1.15-28.43 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-tools amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-tools-debuginfo amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | kernel-tools-devel amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | linux Debian 12.15 (bookworm) | 6.1.15-1 | [DEBIAN-CVE-2023-52646](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52646.md) | Apr 26, 2024 | | Linux | linux Debian 13.5 (trixie) | 6.1.15-1 | [DEBIAN-CVE-2023-52646](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52646.md) | Apr 26, 2024 | | Linux | linux Debian 14 | 6.1.15-1 | [DEBIAN-CVE-2023-52646](https://patchblox.com/security/data/fix/linux/debian-cve-2023-52646.md) | Apr 26, 2024 | | Linux | perf amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | perf-debuginfo amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | python3-perf amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | | Linux | python3-perf-debuginfo amzn 2023 | 6.1.15-28.43.amzn2023 | [ALAS2023-2023-127](https://patchblox.com/security/data/fix/linux/alas2023-2023-127.md) | Mar 11, 2023 | --- Data as of 2026-11-08T13:06:02Z UTC. 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