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In the Linux kernel, the following vulnerability has been resolved:
ocfs2: mount fails with buffer overflow in strlen
Starting with kernel 5.11 built with CONFIG_FORTIFY_SOURCE mouting an ocfs2 filesystem with either o2cb or pcmk cluster stack fails with the trace below. Problem seems to be that strings for cluster stack and cluster name are not guaranteed to be null terminated in the disk representation, while strlcpy assumes that the source string is always null terminated. This causes a read outside of the source string triggering the buffer overflow detection.
detected buffer overflow in strlen ------------[ cut here ]------------ kernel BUG at lib/string.c:1149! invalid opcode: 0000 [#1] SMP PTI CPU: 1 PID: 910 Comm: mount.ocfs2 Not tainted 5.14.0-1-amd64 #1 Debian 5.14.6-2 RIP: 0010:fortify_panic+0xf/0x11 ... Call Trace: ocfs2_initialize_super.isra.0.cold+0xc/0x18 [ocfs2] ocfs2_fill_super+0x359/0x19b0 [ocfs2] mount_bdev+0x185/0x1b0 legacy_get_tree+0x27/0x40 vfs_get_tree+0x25/0xb0 path_mount+0x454/0xa20 __x64_sys_mount+0x103/0x140 do_syscall_64+0x3b/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 22, 2024 |
| Suse | — | Upgrade dtb-rockchipUpgrade kernel-debug-vdsoUpgrade kernel-default-optionalUpgrade kernel-source-vanillaUpgrade dtb-mediatekUpgrade kernel-syms-azureUpgrade cluster-md-kmp-defaultUpgrade kernel-kvmsmallUpgrade cluster-md-kmp-rtUpgrade kernel-default-manUpgrade reiserfs-kmp-azureUpgrade kernel-azure-livepatch-develUpgrade dtb-nvidiaUpgrade kernel-sourceUpgrade gfs2-kmp-defaultUpgrade kernel-default-vdsoUpgrade dlm-kmp-azureUpgrade kernel-rt-vdsoUpgrade dtb-amlogicUpgrade kernel-rt-livepatchUpgrade kselftests-kmp-azureUpgrade dtb-exynosUpgrade kernel-rt_debug-vdsoUpgrade kernel-azure-vdsoUpgrade kernel-devel-azureUpgrade dlm-kmp-rtUpgrade kernel-kvmsmall-vdsoUpgrade cluster-md-kmp-64kbUpgrade gfs2-kmp-azureUpgrade kernel-source-rtUpgrade kernel-azureUpgrade dtb-qcomUpgrade kernel-rt-livepatch-develUpgrade kernel-debug-livepatch-develUpgrade dtb-sprdUpgrade kernel-obs-buildUpgrade kernel-docsUpgrade kernel-default-base-rebuildUpgrade dtb-armUpgrade kernel-rt-extraUpgrade kernel-syms-rtUpgrade kernel-rt-optionalUpgrade kernel-macrosUpgrade kernel-64kb-extraUpgrade kselftests-kmp-defaultUpgrade kernel-azure-develUpgrade kernel-rt-develUpgrade kernel-defaultUpgrade kernel-rtUpgrade kernel-preemptUpgrade dtb-amazonUpgrade kernel-rt_debugUpgrade gfs2-kmp-64kbUpgrade dlm-kmp-64kbUpgrade reiserfs-kmp-64kbUpgrade kernel-64kb-optionalUpgrade dtb-xilinxUpgrade dtb-lgUpgrade kernel-default-develUpgrade gfs2-kmp-rtUpgrade dtb-alteraUpgrade kernel-kvmsmall-develUpgrade kernel-default-livepatchUpgrade kernel-debugUpgrade kernel-develUpgrade dtb-marvellUpgrade ocfs2-kmp-defaultUpgrade kernel-obs-qaUpgrade kernel-default-livepatch-develUpgrade kernel-zfcpdumpUpgrade kernel-symsUpgrade dtb-appleUpgrade kernel-64kb-develUpgrade reiserfs-kmp-defaultUpgrade ocfs2-kmp-azureUpgrade kernel-default-baseUpgrade kernel-docs-htmlUpgrade ocfs2-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-azure-optionalUpgrade dlm-kmp-defaultUpgrade kernel-azure-extraUpgrade kernel-64kbUpgrade kernel-debug-develUpgrade dtb-renesasUpgrade kselftests-kmp-64kbUpgrade kernel-rt_debug-develUpgrade kernel-devel-rtUpgrade kernel-azure-baseUpgrade dtb-freescaleUpgrade reiserfs-kmp-rtUpgrade kernel-preempt-develUpgrade kernel-default-extraUpgrade cluster-md-kmp-azureUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-allwinnerUpgrade kernel-64kb-livepatch-develUpgrade dtb-hisiliconUpgrade dtb-apmUpgrade dtb-amdUpgrade ocfs2-kmp-rtUpgrade dtb-caviumUpgrade dtb-broadcomUpgrade dtb-socionextUpgrade kselftests-kmp-rtUpgrade kernel-kvmsmall-livepatch-devel | Aug 9, 2024 | May 22, 2024 |
| Ubuntu | — | Upgrade linux-hwe-5.4Upgrade linux-gcp-fipsUpgrade linux-ibmUpgrade linux-azure-4.15Upgrade linux-raspiUpgrade linux-gkeopUpgrade linux-azure-5.4Upgrade linux-awsUpgrade linux-hweUpgrade linux-gcp-4.15Upgrade linux-azureUpgrade linux-kvmUpgrade linux-oracleUpgrade linux-raspi-5.4Upgrade linux-bluefieldUpgrade linux-aws-fipsUpgrade linux-fipsUpgrade linux-gcpUpgrade linux-azure-fipsUpgrade linux-aws-hweUpgrade linux-aws-5.4Upgrade linuxUpgrade linux-gcp-5.4Upgrade linux-oracle-5.4 | Nov 19, 2024 | May 22, 2024 |
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