{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-39735","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.119Z","datePublished":"2025-04-18T07:01:36.453Z","dateUpdated":"2026-05-11T21:35:15.464Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:35:15.464Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix slab-out-of-bounds read in ea_get()\n\nDuring the \"size_check\" label in ea_get(), the code checks if the extended\nattribute list (xattr) size matches ea_size. If not, it logs\n\"ea_get: invalid extended attribute\" and calls print_hex_dump().\n\nHere, EALIST_SIZE(ea_buf->xattr) returns 4110417968, which exceeds\nINT_MAX (2,147,483,647). Then ea_size is clamped:\n\n\tint size = clamp_t(int, ea_size, 0, EALIST_SIZE(ea_buf->xattr));\n\nAlthough clamp_t aims to bound ea_size between 0 and 4110417968, the upper\nlimit is treated as an int, causing an overflow above 2^31 - 1. This leads\n\"size\" to wrap around and become negative (-184549328).\n\nThe \"size\" is then passed to print_hex_dump() (called \"len\" in\nprint_hex_dump()), it is passed as type size_t (an unsigned\ntype), this is then stored inside a variable called\n\"int remaining\", which is then assigned to \"int linelen\" which\nis then passed to hex_dump_to_buffer(). In print_hex_dump()\nthe for loop, iterates through 0 to len-1, where len is\n18446744073525002176, calling hex_dump_to_buffer()\non each iteration:\n\n\tfor (i = 0; i < len; i += rowsize) {\n\t\tlinelen = min(remaining, rowsize);\n\t\tremaining -= rowsize;\n\n\t\thex_dump_to_buffer(ptr + i, linelen, rowsize, groupsize,\n\t\t\t\t   linebuf, sizeof(linebuf), ascii);\n\n\t\t...\n\t}\n\nThe expected stopping condition (i < len) is effectively broken\nsince len is corrupted and very large. This eventually leads to\nthe \"ptr+i\" being passed to hex_dump_to_buffer() to get closer\nto the end of the actual bounds of \"ptr\", eventually an out of\nbounds access is done in hex_dump_to_buffer() in the following\nfor loop:\n\n\tfor (j = 0; j < len; j++) {\n\t\t\tif (linebuflen < lx + 2)\n\t\t\t\tgoto overflow2;\n\t\t\tch = ptr[j];\n\t\t...\n\t}\n\nTo fix this we should validate \"EALIST_SIZE(ea_buf->xattr)\"\nbefore it is utilised."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/jfs/xattr.c"],"versions":[{"version":"6e39b681d1eb16f408493bf5023788b57f68998c","lessThan":"3d6fd5b9c6acbc005e53d0211c7381f566babec1","status":"affected","versionType":"git"},{"version":"bbf3f1fd8a0ac7df1db36a9b9e923041a14369f2","lessThan":"50afcee7011155933d8d5e8832f52eeee018cfd3","status":"affected","versionType":"git"},{"version":"27a93c45e16ac25a0e2b5e5668e2d1beca56a478","lessThan":"78c9cbde8880ec02d864c166bcb4fe989ce1d95f","status":"affected","versionType":"git"},{"version":"9c356fc32a4480a2c0e537a05f2a8617633ddad0","lessThan":"46e2c031aa59ea65128991cbca474bd5c0c2ecdb","status":"affected","versionType":"git"},{"version":"9353cdf28d4c5c0ff19c5df7fbf81ea774de43a4","lessThan":"a8c31808925b11393a6601f534bb63bac5366bab","status":"affected","versionType":"git"},{"version":"8c505ebeed8045b488b2e60b516c752b851f8437","lessThan":"0beddc2a3f9b9cf7d8887973041e36c2d0fa3652","status":"affected","versionType":"git"},{"version":"d9f9d96136cba8fedd647d2c024342ce090133c2","lessThan":"16d3d36436492aa248b2d8045e75585ebcc2f34d","status":"affected","versionType":"git"},{"version":"d9f9d96136cba8fedd647d2c024342ce090133c2","lessThan":"5263822558a8a7c0d0248d5679c2dcf4d5cda61f","status":"affected","versionType":"git"},{"version":"d9f9d96136cba8fedd647d2c024342ce090133c2","lessThan":"fdf480da5837c23b146c4743c18de97202fcab37","status":"affected","versionType":"git"},{"version":"4ea25fa8747fb8b1e5a11d87b852023ecf7ae420","status":"affected","versionType":"git"},{"version":"676a787048aafd4d1b38a522b05a9cc77e1b0a33","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/jfs/xattr.c"],"versions":[{"version":"6.13","status":"affected"},{"version":"0","lessThan":"6.13","status":"unaffected","versionType":"semver"},{"version":"5.4.292","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.236","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.180","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.134","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.87","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.23","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.13.11","lessThanOrEqual":"6.13.*","status":"unaffected","versionType":"semver"},{"version":"6.14.2","lessThanOrEqual":"6.14.*","status":"unaffected","versionType":"semver"},{"version":"6.15","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.287","versionEndExcluding":"5.4.292"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.231","versionEndExcluding":"5.10.236"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.174","versionEndExcluding":"5.15.180"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.120","versionEndExcluding":"6.1.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.64","versionEndExcluding":"6.6.87"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.2","versionEndExcluding":"6.12.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.13.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.14.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.325"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11.11"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3d6fd5b9c6acbc005e53d0211c7381f566babec1"},{"url":"https://git.kernel.org/stable/c/50afcee7011155933d8d5e8832f52eeee018cfd3"},{"url":"https://git.kernel.org/stable/c/78c9cbde8880ec02d864c166bcb4fe989ce1d95f"},{"url":"https://git.kernel.org/stable/c/46e2c031aa59ea65128991cbca474bd5c0c2ecdb"},{"url":"https://git.kernel.org/stable/c/a8c31808925b11393a6601f534bb63bac5366bab"},{"url":"https://git.kernel.org/stable/c/0beddc2a3f9b9cf7d8887973041e36c2d0fa3652"},{"url":"https://git.kernel.org/stable/c/16d3d36436492aa248b2d8045e75585ebcc2f34d"},{"url":"https://git.kernel.org/stable/c/5263822558a8a7c0d0248d5679c2dcf4d5cda61f"},{"url":"https://git.kernel.org/stable/c/fdf480da5837c23b146c4743c18de97202fcab37"}],"title":"jfs: fix slab-out-of-bounds read in ea_get()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-125","lang":"en","description":"CWE-125 Out-of-bounds Read"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.1,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T16:13:35.286674Z","id":"CVE-2025-39735","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T16:13:38.835Z"}},{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T19:58:46.112Z"}}]}}