CVE-2023-53506
published 2025-10-01CVE-2023-53506: In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents When merging very long extents we try to push…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.15%
5.0th percentile
In the Linux kernel, the following vulnerability has been resolved:
udf: Do not bother merging very long extents
When merging very long extents we try to push as much length as possible
to the first extent. However this is unnecessarily complicated and not
really worth the trouble. Furthermore there was a bug in the logic
resulting in corrupting extents in the file as syzbot reproducer shows.
So just don't bother with the merging of extents that are too long
together.
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.20-1 (bookworm) | linux 6.1.20-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d52252a1de4cf96a34f722b0cd8902d8ff78eb57 | d52252a1de4cf96a34f722b0cd8902d8ff78eb57 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5d029799d381a9ee06209a222cae75f04c5d5304 | 5d029799d381a9ee06209a222cae75f04c5d5304 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3d20e3b768aff32112bdce8d3219d923ae75f9f1 | 3d20e3b768aff32112bdce8d3219d923ae75f9f1 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 965982feb333aefa9256c0fe188b5f1b958aef63 | 965982feb333aefa9256c0fe188b5f1b958aef63 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9a8d602f0723586e668bae7e65c832ceb9bcc8bc | 9a8d602f0723586e668bae7e65c832ceb9bcc8bc |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < adac9ac6d2e04ea0782b91a00ba10706002f3ec4 | adac9ac6d2e04ea0782b91a00ba10706002f3ec4 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7a965da79f2d22601f329cbfce588386b0847544 | 7a965da79f2d22601f329cbfce588386b0847544 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 53cafe1d6d8ef9f93318e5bfccc0d24f27d41ced | 53cafe1d6d8ef9f93318e5bfccc0d24f27d41ced |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 0 < 6.1.20-1 | 6.1.20-1 |
| linux | linux_kernel | >= 2.6.12.1 < 4.14.308 | 4.14.308 |
| linux | linux_kernel | >= 4.15 < 4.19.276 | 4.19.276 |
| linux | linux_kernel | >= 4.20 < 5.4.235 | 5.4.235 |
| linux | linux_kernel | >= 5.11 < 5.15.99 | 5.15.99 |
| linux | linux_kernel | >= 5.16 < 6.1.16 | 6.1.16 |
| linux | linux_kernel | >= 5.5 < 5.10.173 | 5.10.173 |
| linux | linux_kernel | >= 6.2 < 6.2.3 | 6.2.3 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
kernel: udf: Do not bother merging very long extents
vendor_redhat·2025-10-01·CVSS 7.8
CVE-2023-53506 [HIGH] CWE-703 kernel: udf: Do not bother merging very long extents
kernel: udf: Do not bother merging very long extents
In the Linux kernel, the following vulnerability has been resolved:
udf: Do not bother merging very long extents
When merging very long extents we try to push as much length as possible
to the first extent. However this is unnecessarily complicated and not
really worth the trouble. Furthermore there was a bug in the logic
resulting in corrupting extents in the file as syzbot reproducer shows.
So just don't bother with the merging of extents that are too long
together.
A flaw was discovered in the UDF (Universal Disk Format) filesystem implementation in the Linux Kernel. The merging logic for very long extents attempted to push as much length as possible into the first extent, which introduced a bug. That bug may cause corruption of fil
Debian
CVE-2023-53506: linux - In the Linux kernel, the following vulnerability has been resolved: udf: Do not...
vendor_debian·2023·CVSS 7.8
CVE-2023-53506 [HIGH] CVE-2023-53506: linux - In the Linux kernel, the following vulnerability has been resolved: udf: Do not...
In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents When merging very long extents we try to push as much length as possible to the first extent. However this is unnecessarily complicated and not really worth the trouble. Furthermore there was a bug in the logic resulting in corrupting extents in the file as syzbot reproducer shows. So just don't bother with the merging of extents that are too long together.
Scope: local
bookworm: resolved (fixed in 6.1.20-1)
bullseye: resolved (fixed in 5.10.178-1)
forky: resolved (fixed in 6.1.20-1)
sid: resolved (fixed in 6.1.20-1)
trixie: resolved (fixed in 6.1.20-1)
GHSA
GHSA-wxmx-9x37-q992: In the Linux kernel, the following vulnerability has been resolved:
udf: Do not bother merging very long extents
When merging very long extents we t
ghsa_unreviewed·2025-10-01
CVE-2023-53506 [HIGH] GHSA-wxmx-9x37-q992: In the Linux kernel, the following vulnerability has been resolved:
udf: Do not bother merging very long extents
When merging very long extents we t
In the Linux kernel, the following vulnerability has been resolved:
udf: Do not bother merging very long extents
When merging very long extents we try to push as much length as possible
to the first extent. However this is unnecessarily complicated and not
really worth the trouble. Furthermore there was a bug in the logic
resulting in corrupting extents in the file as syzbot reproducer shows.
So just don't bother with the merging of extents that are too long
together.
OSV
CVE-2023-53506: In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents When merging very long extents we try
osv·2025-10-01·CVSS 7.8
CVE-2023-53506 [HIGH] CVE-2023-53506: In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents When merging very long extents we try
In the Linux kernel, the following vulnerability has been resolved: udf: Do not bother merging very long extents When merging very long extents we try to push as much length as possible to the first extent. However this is unnecessarily complicated and not really worth the trouble. Furthermore there was a bug in the logic resulting in corrupting extents in the file as syzbot reproducer shows. So just don't bother with the merging of extents that are too long together.
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/3d20e3b768aff32112bdce8d3219d923ae75f9f1https://git.kernel.org/stable/c/53cafe1d6d8ef9f93318e5bfccc0d24f27d41cedhttps://git.kernel.org/stable/c/5d029799d381a9ee06209a222cae75f04c5d5304https://git.kernel.org/stable/c/7a965da79f2d22601f329cbfce588386b0847544https://git.kernel.org/stable/c/965982feb333aefa9256c0fe188b5f1b958aef63https://git.kernel.org/stable/c/9a8d602f0723586e668bae7e65c832ceb9bcc8bchttps://git.kernel.org/stable/c/adac9ac6d2e04ea0782b91a00ba10706002f3ec4https://git.kernel.org/stable/c/d52252a1de4cf96a34f722b0cd8902d8ff78eb57
2025-10-01
Published