High severity7.8NVD Advisory· Published Jan 31, 2025· Updated Jun 17, 2026
CVE-2025-21671
CVE-2025-21671
Description
In the Linux kernel, the following vulnerability has been resolved:
zram: fix potential UAF of zram table
If zram_meta_alloc failed early, it frees allocated zram->table without setting it NULL. Which will potentially cause zram_meta_free to access the table if user reset an failed and uninitialized device.
Affected products
138- osv-coords136 versionspkg:rpm/almalinux/kernelpkg:rpm/almalinux/kernel-64kpkg:rpm/almalinux/kernel-64k-corepkg:rpm/almalinux/kernel-64k-debugpkg:rpm/almalinux/kernel-64k-debug-corepkg:rpm/almalinux/kernel-64k-debug-develpkg:rpm/almalinux/kernel-64k-debug-devel-matchedpkg:rpm/almalinux/kernel-64k-debug-modulespkg:rpm/almalinux/kernel-64k-debug-modules-corepkg:rpm/almalinux/kernel-64k-debug-modules-extrapkg:rpm/almalinux/kernel-64k-develpkg:rpm/almalinux/kernel-64k-devel-matchedpkg:rpm/almalinux/kernel-64k-modulespkg:rpm/almalinux/kernel-64k-modules-corepkg:rpm/almalinux/kernel-64k-modules-extrapkg:rpm/almalinux/kernel-abi-stablelistspkg:rpm/almalinux/kernel-corepkg:rpm/almalinux/kernel-cross-headerspkg:rpm/almalinux/kernel-debugpkg:rpm/almalinux/kernel-debug-corepkg:rpm/almalinux/kernel-debug-develpkg:rpm/almalinux/kernel-debug-devel-matchedpkg:rpm/almalinux/kernel-debug-modulespkg:rpm/almalinux/kernel-debug-modules-corepkg:rpm/almalinux/kernel-debug-modules-extrapkg:rpm/almalinux/kernel-debug-uki-virtpkg:rpm/almalinux/kernel-develpkg:rpm/almalinux/kernel-devel-matchedpkg:rpm/almalinux/kernel-docpkg:rpm/almalinux/kernel-headerspkg:rpm/almalinux/kernel-modulespkg:rpm/almalinux/kernel-modules-corepkg:rpm/almalinux/kernel-modules-extrapkg:rpm/almalinux/kernel-modules-extra-matchedpkg:rpm/almalinux/kernel-rtpkg:rpm/almalinux/kernel-rt-64kpkg:rpm/almalinux/kernel-rt-64k-corepkg:rpm/almalinux/kernel-rt-64k-debugpkg:rpm/almalinux/kernel-rt-64k-debug-corepkg:rpm/almalinux/kernel-rt-64k-debug-develpkg:rpm/almalinux/kernel-rt-64k-debug-modulespkg:rpm/almalinux/kernel-rt-64k-debug-modules-corepkg:rpm/almalinux/kernel-rt-64k-debug-modules-extrapkg:rpm/almalinux/kernel-rt-64k-develpkg:rpm/almalinux/kernel-rt-64k-modulespkg:rpm/almalinux/kernel-rt-64k-modules-corepkg:rpm/almalinux/kernel-rt-64k-modules-extrapkg:rpm/almalinux/kernel-rt-corepkg:rpm/almalinux/kernel-rt-debugpkg:rpm/almalinux/kernel-rt-debug-corepkg:rpm/almalinux/kernel-rt-debug-develpkg:rpm/almalinux/kernel-rt-debug-modulespkg:rpm/almalinux/kernel-rt-debug-modules-corepkg:rpm/almalinux/kernel-rt-debug-modules-extrapkg:rpm/almalinux/kernel-rt-develpkg:rpm/almalinux/kernel-rt-modulespkg:rpm/almalinux/kernel-rt-modules-corepkg:rpm/almalinux/kernel-rt-modules-extrapkg:rpm/almalinux/kernel-toolspkg:rpm/almalinux/kernel-tools-libspkg:rpm/almalinux/kernel-tools-libs-develpkg:rpm/almalinux/kernel-uki-virtpkg:rpm/almalinux/kernel-uki-virt-addonspkg:rpm/almalinux/kernel-zfcpdumppkg:rpm/almalinux/kernel-zfcpdump-corepkg:rpm/almalinux/kernel-zfcpdump-develpkg:rpm/almalinux/kernel-zfcpdump-devel-matchedpkg:rpm/almalinux/kernel-zfcpdump-modulespkg:rpm/almalinux/kernel-zfcpdump-modules-corepkg:rpm/almalinux/kernel-zfcpdump-modules-extrapkg:rpm/almalinux/libperfpkg:rpm/almalinux/perfpkg:rpm/almalinux/python3-perfpkg:rpm/almalinux/rtlapkg:rpm/almalinux/rvpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-coco_debug&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP6pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-MICRO-6-0-RT_Update_6&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-livepatch-MICRO-6-0-RT_Update_6&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-MICRO-6-0_Update_6&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-livepatch-MICRO-6-0_Update_6&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-livepatch-SLE15-SP6-RT_Update_10&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_10&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-source-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.0pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP6pkg:rpm/suse/kernel-syms-coco&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Confidential%20Computing%20Technical%20Preview%2015%20SP6pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP6pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP6pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6
< 6.12.0-124.8.1.el10_1+ 135 more
- (no CPE)range: < 6.12.0-124.8.1.el10_1
- (no CPE)range: < 6.12.0-124.8.1.el10_1
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- (no CPE)range: < 6.12.0-124.8.1.el10_1
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- (no CPE)range: < 6.12.0-124.8.1.el10_1
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- (no CPE)range: < 6.12.0-124.8.1.el10_1
- (no CPE)range: < 6.4.0-150600.23.47.1
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.8.34.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.2.150600.12.20.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.1
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.1
- (no CPE)range: < 6.4.0-150600.23.47.1
- (no CPE)range: < 6.4.0-150600.10.34.1
- (no CPE)range: < 6.4.0-150600.10.34.1
- (no CPE)range: < 6.4.0-150600.8.34.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.10.34.1
- (no CPE)range: < 6.4.0-150600.8.34.1
- (no CPE)range: < 6.4.0-150600.23.47.1
- (no CPE)range: < 6.4.0-150600.10.34.1
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.8.34.2
- (no CPE)range: < 6.4.0-15061.21.coco15sp6.1
- (no CPE)range: < 6.4.0-15061.21.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.47.2.150600.12.20.2
- (no CPE)range: < 6.4.0-28.1.21.6
- (no CPE)range: < 6.4.0-28.1.21.6
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-150600.23.47.1
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 1-3.1
- (no CPE)range: < 1-3.1
- (no CPE)range: < 1-3.1
- (no CPE)range: < 1-3.1
- (no CPE)range: < 1-150600.1.5.1
- (no CPE)range: < 1-150600.13.5.1
- (no CPE)range: < 6.4.0-150600.23.47.1
- (no CPE)range: < 6.4.0-150600.10.34.1
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-150600.10.34.1
- (no CPE)range: < 6.4.0-150600.8.34.2
- (no CPE)range: < 6.4.0-15061.21.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-150600.23.47.2
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-28.1
- (no CPE)range: < 6.4.0-150600.10.34.1
- (no CPE)range: < 6.4.0-150600.8.34.1
- (no CPE)range: < 6.4.0-15061.21.coco15sp6.1
- (no CPE)range: < 6.4.0-150600.23.47.1
- (no CPE)range: < 6.4.0-150600.10.34.1
- (no CPE)range: < 6.4.0-150600.23.47.2
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/212fe1c0df4a150fb6298db2cfff267ceaba5402nvdPatch
- git.kernel.org/stable/c/571d3f6045cd3a6d9f6aec33b678f3ffe97582efnvdPatch
- git.kernel.org/stable/c/902ef8f16d5ca77edc77c30656be54186c1e99b7nvdPatch
- git.kernel.org/stable/c/fe3de867f94819ba0f28e035c0b0182150147d95nvdPatch
- lists.debian.org/debian-lts-announce/2025/03/msg00001.htmlnvd
News mentions
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