{"id":"CVE-2022-49380","state":"PUBLISHED","title":"f2fs: fix to avoid f2fs_bug_on() in dec_valid_node_count()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid f2fs_bug_on() in dec_valid_node_count()\n\nAs Yanming reported in bugzilla:\n\nhttps://bugzilla.kernel.org/show_bug.cgi?id=215897\n\nI have encountered a bug in F2FS file system in kernel v5.17.\n\nThe kernel should enable CONFIG_KASAN=y and CONFIG_KASAN_INLINE=y. You can\nreproduce the bug by running the following commands:\n\nThe kernel message is shown below:\n\nkernel BUG at fs/f2fs/f2fs.h:2511!\nCall Trace:\n f2fs_remove_inode_page+0x2a2/0x830\n f2fs_evict_inode+0x9b7/0x1510\n evict+0x282/0x4e0\n do_unlinkat+0x33a/0x540\n __x64_sys_unlinkat+0x8e/0xd0\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe root cause is: .total_valid_block_count or .total_valid_node_count\ncould fuzzed to zero, then once dec_valid_node_count() was called, it\nwill cause BUG_ON(), this patch fixes to print warning info and set\nSBI_NEED_FSCK into CP instead of panic.","publishedAt":"2025-02-26T02:11:18.314Z","updatedAt":"2026-08-15T12:22:42.534Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"f8b3c3fcf33105bc1ee7788e3b51b0a1ae42ae53","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"2766ddaf45b69252bb8fe526b5b6e56904a9ae7a","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"bce859358d3d5940aa858e40ceee70ee6e76130e","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"89d9a48d0cd30429463ea4e37ca83be6773ed5eb","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"ccffa99ae6a1f44797b57444c6a80382a42928fe","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"4d17e6fe9293d57081ffdc11e1cf313e25e8fd9e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/f2fs.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.8","versionType":"semver"},{"version":"5.4.198","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.121","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.46","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.14","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.3","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/f2fs.h"]}],"references":["https://git.kernel.org/stable/c/f8b3c3fcf33105bc1ee7788e3b51b0a1ae42ae53","https://git.kernel.org/stable/c/2766ddaf45b69252bb8fe526b5b6e56904a9ae7a","https://git.kernel.org/stable/c/bce859358d3d5940aa858e40ceee70ee6e76130e","https://git.kernel.org/stable/c/89d9a48d0cd30429463ea4e37ca83be6773ed5eb","https://git.kernel.org/stable/c/ccffa99ae6a1f44797b57444c6a80382a42928fe","https://git.kernel.org/stable/c/4d17e6fe9293d57081ffdc11e1cf313e25e8fd9e"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49380.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49380","state":"PUBLISHED","datePublished":"2025-02-26T02:11:18.314Z","dateUpdated":"2026-08-15T12:22:42.534Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:08:31.559Z"},"containers":{"cna":{"title":"f2fs: fix to avoid f2fs_bug_on() in dec_valid_node_count()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid f2fs_bug_on() in dec_valid_node_count()\n\nAs Yanming reported in bugzilla:\n\nhttps://bugzilla.kernel.org/show_bug.cgi?id=215897\n\nI have encountered a bug in F2FS file system in kernel v5.17.\n\nThe kernel should enable CONFIG_KASAN=y and CONFIG_KASAN_INLINE=y. You can\nreproduce the bug by running the following commands:\n\nThe kernel message is shown below:\n\nkernel BUG at fs/f2fs/f2fs.h:2511!\nCall Trace:\n f2fs_remove_inode_page+0x2a2/0x830\n f2fs_evict_inode+0x9b7/0x1510\n evict+0x282/0x4e0\n do_unlinkat+0x33a/0x540\n __x64_sys_unlinkat+0x8e/0xd0\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe root cause is: .total_valid_block_count or .total_valid_node_count\ncould fuzzed to zero, then once dec_valid_node_count() was called, it\nwill cause BUG_ON(), this patch fixes to print warning info and set\nSBI_NEED_FSCK into CP instead of panic."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"f8b3c3fcf33105bc1ee7788e3b51b0a1ae42ae53","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"2766ddaf45b69252bb8fe526b5b6e56904a9ae7a","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"bce859358d3d5940aa858e40ceee70ee6e76130e","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"89d9a48d0cd30429463ea4e37ca83be6773ed5eb","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"ccffa99ae6a1f44797b57444c6a80382a42928fe","versionType":"git"},{"version":"39a53e0ce0df01b3cf4bb898c7ae2fd2189647d5","status":"affected","lessThan":"4d17e6fe9293d57081ffdc11e1cf313e25e8fd9e","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/f2fs.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.8","versionType":"semver"},{"version":"5.4.198","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.121","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.46","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.14","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.3","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/f2fs/f2fs.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/f8b3c3fcf33105bc1ee7788e3b51b0a1ae42ae53"},{"url":"https://git.kernel.org/stable/c/2766ddaf45b69252bb8fe526b5b6e56904a9ae7a"},{"url":"https://git.kernel.org/stable/c/bce859358d3d5940aa858e40ceee70ee6e76130e"},{"url":"https://git.kernel.org/stable/c/89d9a48d0cd30429463ea4e37ca83be6773ed5eb"},{"url":"https://git.kernel.org/stable/c/ccffa99ae6a1f44797b57444c6a80382a42928fe"},{"url":"https://git.kernel.org/stable/c/4d17e6fe9293d57081ffdc11e1cf313e25e8fd9e"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-15T12:22:42.534Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.4.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.10.121"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.15.46"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.17.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.8","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}