{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21845","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-12-29T08:45:45.778Z","datePublished":"2025-03-12T09:42:01.252Z","dateUpdated":"2026-05-17T15:21:10.835Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-17T15:21:10.835Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: spi-nor: sst: Fix SST write failure\n\n'commit 18bcb4aa54ea (\"mtd: spi-nor: sst: Factor out common write operation\nto `sst_nor_write_data()`\")' introduced a bug where only one byte of data\nis written, regardless of the number of bytes passed to\nsst_nor_write_data(), causing a kernel crash during the write operation.\nEnsure the correct number of bytes are written as passed to\nsst_nor_write_data().\n\nCall trace:\n[   57.400180] ------------[ cut here ]------------\n[   57.404842] While writing 2 byte written 1 bytes\n[   57.409493] WARNING: CPU: 0 PID: 737 at drivers/mtd/spi-nor/sst.c:187 sst_nor_write_data+0x6c/0x74\n[   57.418464] Modules linked in:\n[   57.421517] CPU: 0 UID: 0 PID: 737 Comm: mtd_debug Not tainted 6.12.0-g5ad04afd91f9 #30\n[   57.429517] Hardware name: Xilinx Versal A2197 Processor board revA - x-prc-02 revA (DT)\n[   57.437600] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[   57.444557] pc : sst_nor_write_data+0x6c/0x74\n[   57.448911] lr : sst_nor_write_data+0x6c/0x74\n[   57.453264] sp : ffff80008232bb40\n[   57.456570] x29: ffff80008232bb40 x28: 0000000000010000 x27: 0000000000000001\n[   57.463708] x26: 000000000000ffff x25: 0000000000000000 x24: 0000000000000000\n[   57.470843] x23: 0000000000010000 x22: ffff80008232bbf0 x21: ffff000816230000\n[   57.477978] x20: ffff0008056c0080 x19: 0000000000000002 x18: 0000000000000006\n[   57.485112] x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008232b580\n[   57.492246] x14: 0000000000000000 x13: ffff8000816d1530 x12: 00000000000004a4\n[   57.499380] x11: 000000000000018c x10: ffff8000816fd530 x9 : ffff8000816d1530\n[   57.506515] x8 : 00000000fffff7ff x7 : ffff8000816fd530 x6 : 0000000000000001\n[   57.513649] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\n[   57.520782] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0008049b0000\n[   57.527916] Call trace:\n[   57.530354]  sst_nor_write_data+0x6c/0x74\n[   57.534361]  sst_nor_write+0xb4/0x18c\n[   57.538019]  mtd_write_oob_std+0x7c/0x88\n[   57.541941]  mtd_write_oob+0x70/0xbc\n[   57.545511]  mtd_write+0x68/0xa8\n[   57.548733]  mtdchar_write+0x10c/0x290\n[   57.552477]  vfs_write+0xb4/0x3a8\n[   57.555791]  ksys_write+0x74/0x10c\n[   57.559189]  __arm64_sys_write+0x1c/0x28\n[   57.563109]  invoke_syscall+0x54/0x11c\n[   57.566856]  el0_svc_common.constprop.0+0xc0/0xe0\n[   57.571557]  do_el0_svc+0x1c/0x28\n[   57.574868]  el0_svc+0x30/0xcc\n[   57.577921]  el0t_64_sync_handler+0x120/0x12c\n[   57.582276]  el0t_64_sync+0x190/0x194\n[   57.585933] ---[ end trace 0000000000000000 ]---\n\n[pratyush@kernel.org: add Cc stable tag]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/spi-nor/sst.c"],"versions":[{"version":"b7cd63d13faef7ca5cf31ffa45ebf08829e4c9a7","lessThan":"f7c14993dc2f1eca661975c0ff90a6e2098ecd41","status":"affected","versionType":"git"},{"version":"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79","lessThan":"bb1accc7e0f688886f0c634f2e878b8ac4ee6a58","status":"affected","versionType":"git"},{"version":"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79","lessThan":"9553391f32f8c43e12fc7c04e1035160b5ea20bf","status":"affected","versionType":"git"},{"version":"18bcb4aa54eab75dce41e5c176a1c2bff94f0f79","lessThan":"539bd20352832b9244238a055eb169ccf1c41ff6","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mtd/spi-nor/sst.c"],"versions":[{"version":"6.12","status":"affected"},{"version":"0","lessThan":"6.12","status":"unaffected","versionType":"semver"},{"version":"6.12.17","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.13.5","lessThanOrEqual":"6.13.*","status":"unaffected","versionType":"semver"},{"version":"6.14","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":"6.12","versionEndExcluding":"6.12.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.13.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.14"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/f7c14993dc2f1eca661975c0ff90a6e2098ecd41"},{"url":"https://git.kernel.org/stable/c/bb1accc7e0f688886f0c634f2e878b8ac4ee6a58"},{"url":"https://git.kernel.org/stable/c/9553391f32f8c43e12fc7c04e1035160b5ea20bf"},{"url":"https://git.kernel.org/stable/c/539bd20352832b9244238a055eb169ccf1c41ff6"}],"title":"mtd: spi-nor: sst: Fix SST write failure","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2025-21845","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2025-10-01T19:26:37.579214Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","description":"CWE-noinfo Not enough information"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T19:36:34.588Z"}}]}}