CVE-2022-49167 (GCVE-0-2022-49167)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-05-11 18:54
VLAI
Title
btrfs: do not double complete bio on errors during compressed reads
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: do not double complete bio on errors during compressed reads I hit some weird panics while fixing up the error handling from btrfs_lookup_bio_sums(). Turns out the compression path will complete the bio we use if we set up any of the compression bios and then return an error, and then btrfs_submit_data_bio() will also call bio_endio() on the bio. Fix this by making btrfs_submit_compressed_read() responsible for calling bio_endio() on the bio if there are any errors. Currently it was only doing it if we created the compression bios, otherwise it was depending on btrfs_submit_data_bio() to do the right thing. This creates the above problem, so fix up btrfs_submit_compressed_read() to always call bio_endio() in case of an error, and then simply return from btrfs_submit_data_bio() if we had to call btrfs_submit_compressed_read().
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 86ccbb4d2a2af4109430df518c995a4f7d14dfd2 , < 4a4ceb2b990771c374d85d496a1a45255dde48e3 (git)
Affected: 86ccbb4d2a2af4109430df518c995a4f7d14dfd2 , < 987b5df1d10355d377315a26e7fb6c72ded83c9f (git)
Affected: 86ccbb4d2a2af4109430df518c995a4f7d14dfd2 , < f9f15de85d74e7eef021af059ca53a15f041cdd8 (git)
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Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
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            "fs/btrfs/compression.c",
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Currently it\\nwas only doing it if we created the compression bios, otherwise it was\\ndepending on btrfs_submit_data_bio() to do the right thing.  This\\ncreates the above problem, so fix up btrfs_submit_compressed_read() to\\nalways call bio_endio() in case of an error, and then simply return from\\nbtrfs_submit_data_bio() if we had to call\\nbtrfs_submit_compressed_read().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: no completar dos veces la biograf\u00eda en caso de errores durante lecturas comprimidas Me encontr\u00e9 con algunos p\u00e1nicos extra\u00f1os mientras arreglaba la gesti\u00f3n de errores de btrfs_lookup_bio_sums(). Resulta que la ruta de compresi\u00f3n completar\u00e1 la biograf\u00eda que usamos si configuramos alguna de las biograf\u00edas de compresi\u00f3n y luego devolvemos un error, y luego btrfs_submit_data_bio() tambi\u00e9n llamar\u00e1 a bio_endio() en la biograf\u00eda. 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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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