CVE-2023-53494
published 2025-10-01CVE-2023-53494: In the Linux kernel, the following vulnerability has been resolved: crypto: xts - Handle EBUSY correctly As it is xts only handles the special return value of…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.15%
4.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
crypto: xts - Handle EBUSY correctly
As it is xts only handles the special return value of EINPROGRESS,
which means that in all other cases it will free data related to the
request.
However, as the caller of xts may specify MAY_BACKLOG, we also need
to expect EBUSY and treat it in the same way. Otherwise backlogged
requests will trigger a use-after-free.
Affected
15 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 | >= 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 < 92a07ba4f0af2cccdc2aa5ee32679c9c9714db90 | 92a07ba4f0af2cccdc2aa5ee32679c9c9714db90 |
| linux | linux | >= 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 < 912eb10b65646ffd222256c78a1c566a3dac177d | 912eb10b65646ffd222256c78a1c566a3dac177d |
| linux | linux | >= 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 < 57c3e1d63b63dc0841d41df729297cd7c1c35808 | 57c3e1d63b63dc0841d41df729297cd7c1c35808 |
| linux | linux | >= 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 < d5870848879291700fe6c5257dcb48aadd10425c | d5870848879291700fe6c5257dcb48aadd10425c |
| linux | linux | >= 8083b1bf8163e7ae7d8c90f221106d96450b8aa8 < 51c082514c2dedf2711c99d93c196cc4eedceb40 | 51c082514c2dedf2711c99d93c196cc4eedceb40 |
| 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 | >= 5.11 < 5.15.99 | 5.15.99 |
| linux | linux_kernel | >= 5.16 < 6.1.16 | 6.1.16 |
| linux | linux_kernel | >= 5.4 < 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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-3646-gh58-xhcx: In the Linux kernel, the following vulnerability has been resolved:
crypto: xts - Handle EBUSY correctly
As it is xts only handles the special retur
ghsa_unreviewed·2025-10-01
CVE-2023-53494 [HIGH] CWE-416 GHSA-3646-gh58-xhcx: In the Linux kernel, the following vulnerability has been resolved:
crypto: xts - Handle EBUSY correctly
As it is xts only handles the special retur
In the Linux kernel, the following vulnerability has been resolved:
crypto: xts - Handle EBUSY correctly
As it is xts only handles the special return value of EINPROGRESS,
which means that in all other cases it will free data related to the
request.
However, as the caller of xts may specify MAY_BACKLOG, we also need
to expect EBUSY and treat it in the same way. Otherwise backlogged
requests will trigger a use-after-free.
OSV
CVE-2023-53494: In the Linux kernel, the following vulnerability has been resolved: crypto: xts - Handle EBUSY correctly As it is xts only handles the special return
osv·2025-10-01·CVSS 7.8
CVE-2023-53494 [HIGH] CVE-2023-53494: In the Linux kernel, the following vulnerability has been resolved: crypto: xts - Handle EBUSY correctly As it is xts only handles the special return
In the Linux kernel, the following vulnerability has been resolved: crypto: xts - Handle EBUSY correctly As it is xts only handles the special return value of EINPROGRESS, which means that in all other cases it will free data related to the request. However, as the caller of xts may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.
Red Hat
kernel: crypto: xts - Handle EBUSY correctly
vendor_redhat·2025-10-01·CVSS 7.8
CVE-2023-53494 [HIGH] CWE-664 kernel: crypto: xts - Handle EBUSY correctly
kernel: crypto: xts - Handle EBUSY correctly
In the Linux kernel, the following vulnerability has been resolved:
crypto: xts - Handle EBUSY correctly
As it is xts only handles the special return value of EINPROGRESS,
which means that in all other cases it will free data related to the
request.
However, as the caller of xts may specify MAY_BACKLOG, we also need
to expect EBUSY and treat it in the same way. Otherwise backlogged
requests will trigger a use-after-free.
A flaw use after free in the Linux kernel XTS (XOR Encrypt XOR with ciphertext stealing) crypto Kernel module was found in the way privileges user triggers XTS crypto API in specific way.
A local user could use this flaw to crash the system or potentially escalate their privileges on the system.
Statement: The patch fixes a u
Debian
CVE-2023-53494: linux - In the Linux kernel, the following vulnerability has been resolved: crypto: xts...
vendor_debian·2023·CVSS 7.8
CVE-2023-53494 [HIGH] CVE-2023-53494: linux - In the Linux kernel, the following vulnerability has been resolved: crypto: xts...
In the Linux kernel, the following vulnerability has been resolved: crypto: xts - Handle EBUSY correctly As it is xts only handles the special return value of EINPROGRESS, which means that in all other cases it will free data related to the request. However, as the caller of xts may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.
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)
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/51c082514c2dedf2711c99d93c196cc4eedceb40https://git.kernel.org/stable/c/57c3e1d63b63dc0841d41df729297cd7c1c35808https://git.kernel.org/stable/c/912eb10b65646ffd222256c78a1c566a3dac177dhttps://git.kernel.org/stable/c/92a07ba4f0af2cccdc2aa5ee32679c9c9714db90https://git.kernel.org/stable/c/d5870848879291700fe6c5257dcb48aadd10425c
2025-10-01
Published