vt: stabilize tty reference in kbd_keycode with tty_port_tty_get
Summary
| CVE | CVE-2026-74675 |
|---|
| State | PUBLISHED |
|---|
| Assigner | Linux |
|---|
| Source Priority | CVE Program / NVD first with legacy fallback |
|---|
| Published | 2026-08-22 16:16:41 UTC |
|---|
| Updated | 2026-08-22 16:16:41 UTC |
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| Description | In the Linux kernel, the following vulnerability has been resolved:
vt: stabilize tty reference in kbd_keycode with tty_port_tty_get
kbd_keycode() reads vc->port.tty without acquiring a tty reference,
racing against con_shutdown() which clears port.tty under a different
lock. Use tty_port_tty_get()/tty_kref_put() to hold a proper reference
for the duration the tty pointer is needed. |
|---|
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 b84fd400f80adf4d1c88fbce50ae1cf2f8119e65 git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 38400673c9bfb39cfc87539e1a072087e98f4e4f git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 cab5a342f0589334046741006d8a280514f94235 git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 38a0aa593ebc275aea6f79534d07f44e43768ce6 git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 3f6b1d3fcfc26dc3fc85262f753439df93b055b4 git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 b664592e9ba8c47c9e23408db7ba52eb9f946c8a git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 cc4a1a2ce0c58eafd477effb055863935260ddc1 git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 e25d47a526939ad44b75f778b8a7500562b84fc1 git |
Not specified |
| CNA |
Linux |
Linux |
affected 5.10.265 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 5.15.216 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 6.1.183 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 6.6.152 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 6.12.104 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 6.18.45 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 7.1.9 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.10.265 5.10.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.15.216 5.15.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.1.183 6.1.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.6.152 6.6.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.12.104 6.12.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18.45 6.18.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.1.9 7.1.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.2 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/b84fd400f80adf4d1c88fbce50ae1cf2f8119e65 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/3f6b1d3fcfc26dc3fc85262f753439df93b055b4 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/cab5a342f0589334046741006d8a280514f94235 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/38400673c9bfb39cfc87539e1a072087e98f4e4f |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/cc4a1a2ce0c58eafd477effb055863935260ddc1 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/b664592e9ba8c47c9e23408db7ba52eb9f946c8a |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/38a0aa593ebc275aea6f79534d07f44e43768ce6 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/e25d47a526939ad44b75f778b8a7500562b84fc1 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.