{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38034", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.978Z", "datePublished": "2025-06-18T09:33:21.120Z", "dateUpdated": "2026-05-11T21:19:59.723Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:19:59.723Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: correct the order of prelim_ref arguments in btrfs__prelim_ref\n\nbtrfs_prelim_ref() calls the old and new reference variables in the\nincorrect order. This causes a NULL pointer dereference because oldref\nis passed as NULL to trace_btrfs_prelim_ref_insert().\n\nNote, trace_btrfs_prelim_ref_insert() is being called with newref as\noldref (and oldref as NULL) on purpose in order to print out\nthe values of newref.\n\nTo reproduce:\necho 1 > /sys/kernel/debug/tracing/events/btrfs/btrfs_prelim_ref_insert/enable\n\nPerform some writeback operations.\n\nBacktrace:\nBUG: kernel NULL pointer dereference, address: 0000000000000018\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 115949067 P4D 115949067 PUD 11594a067 PMD 0\n Oops: Oops: 0000 [#1] SMP NOPTI\n CPU: 1 UID: 0 PID: 1188 Comm: fsstress Not tainted 6.15.0-rc2-tester+ #47 PREEMPT(voluntary) 7ca2cef72d5e9c600f0c7718adb6462de8149622\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-2-gc13ff2cd-prebuilt.qemu.org 04/01/2014\n RIP: 0010:trace_event_raw_event_btrfs__prelim_ref+0x72/0x130\n Code: e8 43 81 9f ff 48 85 c0 74 78 4d 85 e4 0f 84 8f 00 00 00 49 8b 94 24 c0 06 00 00 48 8b 0a 48 89 48 08 48 8b 52 08 48 89 50 10 <49> 8b 55 18 48 89 50 18 49 8b 55 20 48 89 50 20 41 0f b6 55 28 88\n RSP: 0018:ffffce44820077a0 EFLAGS: 00010286\n RAX: ffff8c6b403f9014 RBX: ffff8c6b55825730 RCX: 304994edf9cf506b\n RDX: d8b11eb7f0fdb699 RSI: ffff8c6b403f9010 RDI: ffff8c6b403f9010\n RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000010\n R10: 00000000ffffffff R11: 0000000000000000 R12: ffff8c6b4e8fb000\n R13: 0000000000000000 R14: ffffce44820077a8 R15: ffff8c6b4abd1540\n FS: 00007f4dc6813740(0000) GS:ffff8c6c1d378000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000018 CR3: 000000010eb42000 CR4: 0000000000750ef0\n PKRU: 55555554\n Call Trace:\n \n prelim_ref_insert+0x1c1/0x270\n find_parent_nodes+0x12a6/0x1ee0\n ? __entry_text_end+0x101f06/0x101f09\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n btrfs_is_data_extent_shared+0x167/0x640\n ? fiemap_process_hole+0xd0/0x2c0\n extent_fiemap+0xa5c/0xbc0\n ? __entry_text_end+0x101f05/0x101f09\n btrfs_fiemap+0x7e/0xd0\n do_vfs_ioctl+0x425/0x9d0\n __x64_sys_ioctl+0x75/0xc0" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/trace/events/btrfs.h" ], "versions": [ { "version": "00142756e1f8015d2f8ce96532d156689db7e448", "lessThan": "5755b6731655e248c4f1d52a2e1b18795b4a2a3a", "status": "affected", "versionType": "git" }, { "version": "00142756e1f8015d2f8ce96532d156689db7e448", "lessThan": "a641154cedf9d69730f8af5d0a901fe86e6486bd", "status": "affected", "versionType": "git" }, { "version": "00142756e1f8015d2f8ce96532d156689db7e448", "lessThan": "a876703894a6dd6e8c04b0635d86e9f7a7c81b79", "status": "affected", "versionType": "git" }, { "version": "00142756e1f8015d2f8ce96532d156689db7e448", "lessThan": "0528bba48dce7820d2da72e1a114e1c4552367eb", "status": "affected", "versionType": "git" }, { "version": "00142756e1f8015d2f8ce96532d156689db7e448", "lessThan": "7a97f961a568a8f72472dc804af02a0f73152c5f", "status": "affected", "versionType": "git" }, { "version": "00142756e1f8015d2f8ce96532d156689db7e448", "lessThan": "7f7c8c03feba5f2454792fab3bb8bd45bd6883f9", "status": "affected", "versionType": "git" }, { "version": "00142756e1f8015d2f8ce96532d156689db7e448", "lessThan": "137bfa08c6441f324d00692d1e9d22cfd773329b", "status": "affected", "versionType": "git" }, { "version": "00142756e1f8015d2f8ce96532d156689db7e448", "lessThan": "bc7e0975093567f51be8e1bdf4aa5900a3cf0b1e", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "include/trace/events/btrfs.h" ], "versions": [ { "version": "4.14", "status": "affected" }, { "version": "0", "lessThan": "4.14", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.294", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.238", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.185", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.141", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.93", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.31", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.14.9", "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": "4.14", "versionEndExcluding": "5.4.294" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.10.238" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.15.185" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.1.141" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.6.93" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.12.31" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.14.9" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.15" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/5755b6731655e248c4f1d52a2e1b18795b4a2a3a" }, { "url": "https://git.kernel.org/stable/c/a641154cedf9d69730f8af5d0a901fe86e6486bd" }, { "url": "https://git.kernel.org/stable/c/a876703894a6dd6e8c04b0635d86e9f7a7c81b79" }, { "url": "https://git.kernel.org/stable/c/0528bba48dce7820d2da72e1a114e1c4552367eb" }, { "url": "https://git.kernel.org/stable/c/7a97f961a568a8f72472dc804af02a0f73152c5f" }, { "url": "https://git.kernel.org/stable/c/7f7c8c03feba5f2454792fab3bb8bd45bd6883f9" }, { "url": "https://git.kernel.org/stable/c/137bfa08c6441f324d00692d1e9d22cfd773329b" }, { "url": "https://git.kernel.org/stable/c/bc7e0975093567f51be8e1bdf4aa5900a3cf0b1e" } ], "title": "btrfs: correct the order of prelim_ref arguments in btrfs__prelim_ref", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:33:12.540Z" } } ] } }