cve-2024-49957
Vulnerability from cvelistv5
Published
2024-10-21 18:02
Modified
2024-12-19 09:30
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix null-ptr-deref when journal load failed. During the mounting process, if journal_reset() fails because of too short journal, then lead to jbd2_journal_load() fails with NULL j_sb_buffer. Subsequently, ocfs2_journal_shutdown() calls jbd2_journal_flush()->jbd2_cleanup_journal_tail()-> __jbd2_update_log_tail()->jbd2_journal_update_sb_log_tail() ->lock_buffer(journal->j_sb_buffer), resulting in a null-pointer dereference error. To resolve this issue, we should check the JBD2_LOADED flag to ensure the journal was properly loaded. Additionally, use journal instead of osb->journal directly to simplify the code.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/387bf565cc03e2e8c720b8b4798efea4aacb6962Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5784d9fcfd43bd853654bb80c87ef293b9e8e80aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/703b2c7e0798d263154dc8593dc2345f75dc077f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82dfdd1e31e774578f76ce6dc90c834f96403a0fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/86a89e75e9e4dfa768b97db466ad6bedf2e7ea5bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf605ae98dab5c15c5b631d4d7f88898cb41b649Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f60e94a83db799bde625ac8671a5b4a6354e7120Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fd89d92c1140cee8f59de336cb37fa65e359c123
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff55291fb36779819211b596da703389135f5b05Patch
Impacted products
Vendor Product Version
Linux Linux Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
Version: f6f50e28f0cb8d7bcdfaacc83129f005dede11b1
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   Linux Linux Version: 2.6.32
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Additionally, use journal instead of\\nosb->journal directly to simplify the code.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ocfs2: se corrige el error null-ptr-deref cuando falla la carga del diario. Durante el proceso de montaje, si journal_reset() falla debido a que el diario es demasiado corto, entonces provoca que jbd2_journal_load() falle con j_sb_buffer NULL. Posteriormente, ocfs2_journal_shutdown() llama a jbd2_journal_flush()->jbd2_cleanup_journal_tail()-> __jbd2_update_log_tail()->jbd2_journal_update_sb_log_tail() ->lock_buffer(journal->j_sb_buffer), lo que da como resultado un error de desreferencia de puntero nulo. Para resolver este problema, debemos verificar el indicador JBD2_LOADED para asegurarnos de que el diario se cargó correctamente. 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}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.