CVE-2026-23193
published 2026-02-14CVE-2026-23193: In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In…
PriorityP340high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.24%
15.1th percentile
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In iscsit_dec_session_usage_count(), the function calls complete() while
holding the sess->session_usage_lock. Similar to the connection usage count
logic, the waiter signaled by complete() (e.g., in the session release
path) may wake up and free the iscsit_session structure immediately.
This creates a race condition where the current thread may attempt to
execute spin_unlock_bh() on a session structure that has already been
deallocated, resulting in a KASAN slab-use-after-free.
To resolve this, release the session_usage_lock before calling complete()
to ensure all dereferences of the sess pointer are finished before the
waiter is allowed to proceed with deallocation.
Affected
61 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.164-1 (bookworm) | linux 6.1.164-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.164-1 (bookworm) | linux 6.1.164-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= e48354ce078c079996f89d715dfa44814b4eba01 < 2b64015550a13bcc72910be0565548d9a754d46d | 2b64015550a13bcc72910be0565548d9a754d46d |
| linux | linux | >= e48354ce078c079996f89d715dfa44814b4eba01 < fd8b0900173307039d3a84644c2fee041a7ed4fb | fd8b0900173307039d3a84644c2fee041a7ed4fb |
| linux | linux | >= e48354ce078c079996f89d715dfa44814b4eba01 < d8dbdc146e9e9a976931b78715be2e91299049f9 | d8dbdc146e9e9a976931b78715be2e91299049f9 |
| linux | linux | >= e48354ce078c079996f89d715dfa44814b4eba01 < 11ebafffce31efc6abeb28c509017976fc49f1ca | 11ebafffce31efc6abeb28c509017976fc49f1ca |
| linux | linux | >= e48354ce078c079996f89d715dfa44814b4eba01 < 41b86a9ec037bd3435d68dd3692f0891a207e7e7 | 41b86a9ec037bd3435d68dd3692f0891a207e7e7 |
| linux | linux | >= e48354ce078c079996f89d715dfa44814b4eba01 < 4530f4e4d0e6a207110b0ffed0c911bca43531a4 | 4530f4e4d0e6a207110b0ffed0c911bca43531a4 |
| linux | linux | >= e48354ce078c079996f89d715dfa44814b4eba01 < 84dc6037390b8607c5551047d3970336cb51ba9a | 84dc6037390b8607c5551047d3970336cb51ba9a |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.251-1 | 5.10.251-1 |
| linux | linux_kernel | >= 0 < 6.1.164-1 | 6.1.164-1 |
| linux | linux_kernel | >= 0 < 6.12.73-1 | 6.12.73-1 |
| linux | linux_kernel | >= 0 < 6.18.10-1 | 6.18.10-1 |
| linux | linux_kernel | >= 3.1 < 5.10.250 | 5.10.250 |
| linux | linux_kernel | >= 5.11 < 5.15.200 | 5.15.200 |
| linux | linux_kernel | >= 5.16 < 6.1.163 | 6.1.163 |
| linux | linux_kernel | >= 6.13 < 6.18.10 | 6.18.10 |
| linux | linux_kernel | >= 6.2 < 6.6.124 | 6.6.124 |
| linux | linux_kernel | >= 6.7 < 6.12.70 | 6.12.70 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
| ubuntu | linux-aws-5.15 | — | — |
| ubuntu | linux-aws-fips | — | — |
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_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_ubuntu7.8HIGH
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It was discovered that the Linux kernel algif_aead module did not properly
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A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Cryptographic API;
- Compute Acceleration Framework;
- Drivers core;
- Null block device driver;
- Ublk userspace block driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
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- Ublk userspace block driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
- DPLL subsystem;
- GPU drivers;
- HID subsystem;
- Intel Trace Hub HW tracing drivers;
- IIO ADC drivers;
- IIO subsystem;
- On-Chip Interconnect management framework;
- IRQ chip drivers;
- Modular ISDN driver;
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Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Cryptographic API;
- Compute Acceleration Framework;
- Drivers core;
- Null block device driver;
- Ublk userspace block driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
- DPLL
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It was discovered that the Linux kernel algif_aead module did not properly
handle in-place cryptographic operations. This flaw is known as Copy Fail.
A local attacker could use this to escalate privileges, or possibly escape
a container. (CVE-2026-31431)
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- ARM64 architecture;
- x86 architecture;
- Cryptographic API;
- Compute Acceleration Framework;
- Drivers core;
- Null block device driver;
- Ublk userspace block driver;
- Bluetooth drivers;
- Counter interface drivers;
- DMA engine subsystem;
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Red Hat
kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
vendor_redhat·2026-02-14·CVSS 8.8
CVE-2026-23193 [HIGH] CWE-364 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In iscsit_dec_session_usage_count(), the function calls complete() while
holding the sess->session_usage_lock. Similar to the connection usage count
logic, the waiter signaled by complete() (e.g., in the session release
path) may wake up and free the iscsit_session structure immediately.
This creates a race condition where the current thread may attempt to
execute spin_unlock_bh() on a session structure that has already been
deallocated, resulting in a KASAN slab-use-after-free.
To resolve this, release the session_usage_lock before calling complete()
to ensure all
Debian
CVE-2026-23193: linux - In the Linux kernel, the following vulnerability has been resolved: scsi: targe...
vendor_debian·2026·CVSS 8.8
CVE-2026-23193 [HIGH] CVE-2026-23193: linux - In the Linux kernel, the following vulnerability has been resolved: scsi: targe...
In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Similar to the connection usage count logic, the waiter signaled by complete() (e.g., in the session release path) may wake up and free the iscsit_session structure immediately. This creates a race condition where the current thread may attempt to execute spin_unlock_bh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free. To resolve this, release the session_usage_lock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to procee
VulDB
Linux Kernel up to 6.18.9 scsi iscsit_dec_session_usage_count use after free (EUVD-2026-6108 / Nessus ID 299090)
vuldb·2026-05-05·CVSS 7.8
CVE-2026-23193 [HIGH] Linux Kernel up to 6.18.9 scsi iscsit_dec_session_usage_count use after free (EUVD-2026-6108 / Nessus ID 299090)
A vulnerability was found in Linux Kernel up to 6.18.9. It has been declared as critical. This impacts the function iscsit_dec_session_usage_count of the component scsi. Such manipulation leads to use after free.
This vulnerability is listed as CVE-2026-23193. The attack must be carried out from within the local network. There is no available exploit.
It is recommended to upgrade the affected component.
GHSA
GHSA-fccp-g2rw-8q2g: In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In i
ghsa_unreviewed·2026-02-14
CVE-2026-23193 [HIGH] CWE-416 GHSA-fccp-g2rw-8q2g: In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In i
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In iscsit_dec_session_usage_count(), the function calls complete() while
holding the sess->session_usage_lock. Similar to the connection usage count
logic, the waiter signaled by complete() (e.g., in the session release
path) may wake up and free the iscsit_session structure immediately.
This creates a race condition where the current thread may attempt to
execute spin_unlock_bh() on a session structure that has already been
deallocated, resulting in a KASAN slab-use-after-free.
To resolve this, release the session_usage_lock before calling complete()
to ensure all dereferences of the sess pointer are finished before the
waiter is allowed to pr
OSV
CVE-2026-23193: In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In isc
osv·2026-02-14·CVSS 7.8
CVE-2026-23193 [HIGH] CVE-2026-23193: In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In isc
In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Similar to the connection usage count logic, the waiter signaled by complete() (e.g., in the session release path) may wake up and free the iscsit_session structure immediately. This creates a race condition where the current thread may attempt to execute spin_unlock_bh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free. To resolve this, release the session_usage_lock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to procee
No detection rules found.
No public exploits indexed.
Wiz
CVE-2026-23193 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 8.8
CVE-2026-23193 [HIGH] CVE-2026-23193 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-23193 :
Linux Kernel vulnerability analysis and mitigation
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In iscsit_dec_session_usage_count(), the function calls complete() while
holding the sess->session_usage_lock. Similar to the connection usage count
logic, the waiter signaled by complete() (e.g., in the session release
path) may wake up and free the iscsit_session structure immediately.
This creates a race condition where the current thread may attempt to
execute spin_unlock_bh() on a session structure that has already been
deallocated, resulting in a KASAN slab-use-after-free.
To resolve this, release the session_usage_lock before calling complete()
to ensure all derefer
Bugzilla
CVE-2026-23193 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
bugzilla·2026-02-14·CVSS 8.8
CVE-2026-23193 [HIGH] CVE-2026-23193 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
CVE-2026-23193 kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
In iscsit_dec_session_usage_count(), the function calls complete() while
holding the sess->session_usage_lock. Similar to the connection usage count
logic, the waiter signaled by complete() (e.g., in the session release
path) may wake up and free the iscsit_session structure immediately.
This creates a race condition where the current thread may attempt to
execute spin_unlock_bh() on a session structure that has already been
deallocated, resulting in a KASAN slab-use-after-free.
To resolve this, release the session_usage_lock before calling compl
https://git.kernel.org/stable/c/11ebafffce31efc6abeb28c509017976fc49f1cahttps://git.kernel.org/stable/c/2b64015550a13bcc72910be0565548d9a754d46dhttps://git.kernel.org/stable/c/41b86a9ec037bd3435d68dd3692f0891a207e7e7https://git.kernel.org/stable/c/4530f4e4d0e6a207110b0ffed0c911bca43531a4https://git.kernel.org/stable/c/84dc6037390b8607c5551047d3970336cb51ba9ahttps://git.kernel.org/stable/c/d8dbdc146e9e9a976931b78715be2e91299049f9https://git.kernel.org/stable/c/fd8b0900173307039d3a84644c2fee041a7ed4fb
2026-02-14
Published