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In the Linux kernel, the following vulnerability has been resolved:
erofs: fix inconsistent per-file compression format
EROFS can select compression algorithms on a per-file basis, and each per-file compression algorithm needs to be marked in the on-disk superblock for initialization.
However, syzkaller can generate inconsistent crafted images that use an unsupported algorithmtype for specific inodes, e.g. use MicroLZMA algorithmtype even it's not set in `sbi->available_compr_algs`. This can lead to an unexpected "BUG: kernel NULL pointer dereference" if the corresponding decompressor isn't built-in.
Fix this by checking against `sbi->available_compr_algs` for each m_algorithmformat request. Incorrect !erofs_sb_has_compr_cfgs preset bitmap is now fixed together since it was harmless previously.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | Feb 22, 2024 |
| Suse | — | Upgrade dtb-broadcomUpgrade kernel-syms-azureUpgrade cluster-md-kmp-azureUpgrade kernel-default-extraUpgrade kselftests-kmp-rtUpgrade dtb-qcomUpgrade dtb-amlogicUpgrade kernel-default-base-rebuildUpgrade kernel-debug-livepatch-develUpgrade kernel-zfcpdumpUpgrade dtb-socionextUpgrade kernel-kvmsmall-develUpgrade kernel-rtUpgrade kernel-source-rtUpgrade dlm-kmp-azureUpgrade kernel-azure-develUpgrade kernel-rt-vdsoUpgrade reiserfs-kmp-rtUpgrade kernel-kvmsmallUpgrade reiserfs-kmp-64kbUpgrade kselftests-kmp-defaultUpgrade kernel-macrosUpgrade gfs2-kmp-rtUpgrade kernel-obs-qaUpgrade kernel-kvmsmall-livepatch-develUpgrade dtb-rockchipUpgrade kernel-rt-optionalUpgrade kernel-symsUpgrade kernel-docsUpgrade dtb-apmUpgrade kernel-docs-htmlUpgrade dtb-marvellUpgrade kernel-azure-livepatch-develUpgrade kernel-azure-vdsoUpgrade kernel-rt-livepatch-develUpgrade kernel-rt_debug-vdsoUpgrade kernel-kvmsmall-vdsoUpgrade gfs2-kmp-64kbUpgrade dtb-armUpgrade dtb-appleUpgrade cluster-md-kmp-defaultUpgrade dlm-kmp-defaultUpgrade kernel-devel-azureUpgrade kernel-64kb-livepatch-develUpgrade kernel-azure-extraUpgrade kernel-rt_debugUpgrade kernel-syms-rtUpgrade kernel-64kbUpgrade ocfs2-kmp-rtUpgrade kernel-azureUpgrade kernel-64kb-extraUpgrade kernel-default-optionalUpgrade kernel-default-livepatchUpgrade kernel-azure-optionalUpgrade kernel-64kb-develUpgrade gfs2-kmp-azureUpgrade dtb-renesasUpgrade dtb-mediatekUpgrade cluster-md-kmp-rtUpgrade kernel-source-azureUpgrade kernel-obs-buildUpgrade dlm-kmp-64kbUpgrade kernel-develUpgrade reiserfs-kmp-azureUpgrade ocfs2-kmp-64kbUpgrade kernel-sourceUpgrade kernel-default-develUpgrade dtb-nvidiaUpgrade dtb-hisiliconUpgrade kernel-64kb-optionalUpgrade kselftests-kmp-64kbUpgrade dtb-alteraUpgrade kernel-default-vdsoUpgrade ocfs2-kmp-defaultUpgrade dtb-allwinnerUpgrade kernel-defaultUpgrade kernel-devel-rtUpgrade dtb-lgUpgrade cluster-md-kmp-64kbUpgrade kernel-source-vanillaUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-default-baseUpgrade dtb-amdUpgrade kselftests-kmp-azureUpgrade kernel-rt-develUpgrade dtb-sprdUpgrade dtb-caviumUpgrade kernel-rt-extraUpgrade kernel-rt_debug-develUpgrade dtb-amazonUpgrade dlm-kmp-rtUpgrade kernel-debug-develUpgrade dtb-xilinxUpgrade ocfs2-kmp-azureUpgrade kernel-debug-vdsoUpgrade dtb-freescaleUpgrade kernel-debugUpgrade gfs2-kmp-defaultUpgrade dtb-exynosUpgrade reiserfs-kmp-defaultUpgrade kernel-default-livepatch-devel | Dec 5, 2025 | Sep 10, 2024 |
| Ubuntu | — | Upgrade linux-raspi-realtime | Feb 11, 2025 | Feb 22, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 28, 2026 | Feb 22, 2024 |
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