CVE-2026-23148
published 2026-02-14CVE-2026-23148: In the Linux kernel, the following vulnerability has been resolved: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference There is a race…
PriorityP422medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.27%
19.1th percentile
In the Linux kernel, the following vulnerability has been resolved:
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
There is a race condition in nvmet_bio_done() that can cause a NULL
pointer dereference in blk_cgroup_bio_start():
1. nvmet_bio_done() is called when a bio completes
2. nvmet_req_complete() is called, which invokes req->ops->queue_response(req)
3. The queue_response callback can re-queue and re-submit the same request
4. The re-submission reuses the same inline_bio from nvmet_req
5. Meanwhile, nvmet_req_bio_put() (called after nvmet_req_complete)
invokes bio_uninit() for inline_bio, which sets bio->bi_blkg to NULL
6. The re-submitted bio enters submit_bio_noacct_nocheck()
7. blk_cgroup_bio_start() dereferences bio->bi_blkg, causing a crash:
BUG: kernel NULL pointer dereference, address: 0000000000000028
#PF: supervisor read access in kernel mode
RIP: 0010:blk_cgroup_bio_start+0x10/0xd0
Call Trace:
submit_bio_noacct_nocheck+0x44/0x250
nvmet_bdev_execute_rw+0x254/0x370 [nvmet]
process_one_work+0x193/0x3c0
worker_thread+0x281/0x3a0
Fix this by reordering nvmet_bio_done() to call nvmet_req_bio_put()
BEFORE nvmet_req_complete(). This ensures the bio is cleaned up before
the request can be re-submitted, preventing the race condition.
Affected
45 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.18.9-1 (forky) | linux 6.18.9-1 (forky) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 190f4c2c863af7cc5bb354b70e0805f06419c038 < 68207ceefd71cc74ce4e983fa9bd10c3122e349b | 68207ceefd71cc74ce4e983fa9bd10c3122e349b |
| linux | linux | >= 190f4c2c863af7cc5bb354b70e0805f06419c038 < 0fcee2cfc4b2e16e62ff8e0cc2cd8dd24efad65e | 0fcee2cfc4b2e16e62ff8e0cc2cd8dd24efad65e |
| linux | linux | >= 431e58d56fcb5ff1f9eb630724a922e0d2a941df < ee10b06980acca1d46e0fa36d6fb4a9578eab6e4 | ee10b06980acca1d46e0fa36d6fb4a9578eab6e4 |
| linux | linux | >= 6.12.37 < 6.12.69 | 6.12.69 |
| linux | linux | >= 6.15.6 < 6.16 | 6.16 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.12.69-1 | 6.12.69-1 |
| linux | linux_kernel | >= 0 < 6.18.9-1 | 6.18.9-1 |
| linux | linux_kernel | >= 6.12.37 < 6.12.69 | 6.12.69 |
| linux | linux_kernel | >= 6.15.6 < 6.16 | 6.16 |
| linux | linux_kernel | >= 6.16.1 < 6.18.9 | 6.18.9 |
| ubuntu | linux | — | — |
| ubuntu | linux-aws | — | — |
| ubuntu | linux-aws-fips | — | — |
| ubuntu | linux-azure | — | — |
| ubuntu | linux-azure-6.17 | — | — |
| ubuntu | linux-azure-6.8 | — | — |
| ubuntu | linux-azure-fde-6.17 | — | — |
| ubuntu | linux-azure-fips | — | — |
| ubuntu | linux-fips | — | — |
| ubuntu | linux-gcp | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_ubuntu7.8HIGH
vendor_debian7.5LOW
vendor_redhat7.5HIGH
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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;
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- Drivers core;
- Null block device driver;
- 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;
- LED subsystem;
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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;
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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: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
vendor_redhat·2026-02-14·CVSS 7.5
CVE-2026-23148 [HIGH] CWE-367 kernel: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
kernel: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
In the Linux kernel, the following vulnerability has been resolved:
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
There is a race condition in nvmet_bio_done() that can cause a NULL
pointer dereference in blk_cgroup_bio_start():
1. nvmet_bio_done() is called when a bio completes
2. nvmet_req_complete() is called, which invokes req->ops->queue_response(req)
3. The queue_response callback can re-queue and re-submit the same request
4. The re-submission reuses the same inline_bio from nvmet_req
5. Meanwhile, nvmet_req_bio_put() (called after nvmet_req_complete)
invokes bio_uninit() for inline_bio, which sets bio->bi_blkg to NULL
6. The re-submitted bio enters submit_bio_noacct_nocheck()
Debian
CVE-2026-23148: linux - In the Linux kernel, the following vulnerability has been resolved: nvmet: fix ...
vendor_debian·2026·CVSS 7.5
CVE-2026-23148 [HIGH] CVE-2026-23148: linux - In the Linux kernel, the following vulnerability has been resolved: nvmet: fix ...
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference There is a race condition in nvmet_bio_done() that can cause a NULL pointer dereference in blk_cgroup_bio_start(): 1. nvmet_bio_done() is called when a bio completes 2. nvmet_req_complete() is called, which invokes req->ops->queue_response(req) 3. The queue_response callback can re-queue and re-submit the same request 4. The re-submission reuses the same inline_bio from nvmet_req 5. Meanwhile, nvmet_req_bio_put() (called after nvmet_req_complete) invokes bio_uninit() for inline_bio, which sets bio->bi_blkg to NULL 6. The re-submitted bio enters submit_bio_noacct_nocheck() 7. blk_cgroup_bio_start() dereferences bio->bi_blkg, causing a crash: BUG: kernel
OSV
CVE-2026-23148: In the Linux kernel, the following vulnerability has been resolved: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference There is a
osv·2026-02-14·CVSS 5.5
CVE-2026-23148 [MEDIUM] CVE-2026-23148: In the Linux kernel, the following vulnerability has been resolved: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference There is a
In the Linux kernel, the following vulnerability has been resolved: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference There is a race condition in nvmet_bio_done() that can cause a NULL pointer dereference in blk_cgroup_bio_start(): 1. nvmet_bio_done() is called when a bio completes 2. nvmet_req_complete() is called, which invokes req->ops->queue_response(req) 3. The queue_response callback can re-queue and re-submit the same request 4. The re-submission reuses the same inline_bio from nvmet_req 5. Meanwhile, nvmet_req_bio_put() (called after nvmet_req_complete) invokes bio_uninit() for inline_bio, which sets bio->bi_blkg to NULL 6. The re-submitted bio enters submit_bio_noacct_nocheck() 7. blk_cgroup_bio_start() dereferences bio->bi_blkg, causing a crash: BUG: kernel
GHSA
GHSA-c783-64qq-77vx: In the Linux kernel, the following vulnerability has been resolved:
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
There is
ghsa_unreviewed·2026-02-14
CVE-2026-23148 [MEDIUM] CWE-476 GHSA-c783-64qq-77vx: In the Linux kernel, the following vulnerability has been resolved:
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
There is
In the Linux kernel, the following vulnerability has been resolved:
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
There is a race condition in nvmet_bio_done() that can cause a NULL
pointer dereference in blk_cgroup_bio_start():
1. nvmet_bio_done() is called when a bio completes
2. nvmet_req_complete() is called, which invokes req->ops->queue_response(req)
3. The queue_response callback can re-queue and re-submit the same request
4. The re-submission reuses the same inline_bio from nvmet_req
5. Meanwhile, nvmet_req_bio_put() (called after nvmet_req_complete)
invokes bio_uninit() for inline_bio, which sets bio->bi_blkg to NULL
6. The re-submitted bio enters submit_bio_noacct_nocheck()
7. blk_cgroup_bio_start() dereferences bio->bi_blkg, causing a crash:
BUG: ke
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-23148 kernel: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
bugzilla·2026-02-14·CVSS 5.5
CVE-2026-23148 [MEDIUM] CVE-2026-23148 kernel: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
CVE-2026-23148 kernel: nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
In the Linux kernel, the following vulnerability has been resolved:
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
There is a race condition in nvmet_bio_done() that can cause a NULL
pointer dereference in blk_cgroup_bio_start():
1. nvmet_bio_done() is called when a bio completes
2. nvmet_req_complete() is called, which invokes req->ops->queue_response(req)
3. The queue_response callback can re-queue and re-submit the same request
4. The re-submission reuses the same inline_bio from nvmet_req
5. Meanwhile, nvmet_req_bio_put() (called after nvmet_req_complete)
invokes bio_uninit() for inline_bio, which sets bio->bi_blkg to NULL
6. The re-submitted bio enters submit_bio
Wiz
CVE-2026-23148 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 7.5
CVE-2026-23148 [HIGH] CVE-2026-23148 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-23148 :
Linux Kernel vulnerability analysis and mitigation
In the Linux kernel, the following vulnerability has been resolved:
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
There is a race condition in nvmet_bio_done() that can cause a NULL
pointer dereference in blk_cgroup_bio_start():
nvmet_bio_done() is called when a bio completes
nvmet_req_complete() is called, which invokes req->ops->queue_response(req)
The queue_response callback can re-queue and re-submit the same request
The re-submission reuses the same inline_bio from nvmet_req
Meanwhile, nvmet_req_bio_put() (called after nvmet_req_complete) invokes bio_uninit() for inline_bio, which sets bio->bi_blkg to NULL
The re-submitted bio enters submit_bio_noacct_nocheck()
blk_cgroup_bio_st
2026-02-14
Published