Answer in brief
CVE-2023-54198 records a Unknown severity vulnerability in tty: fix out-of-bounds access in tty_driver_lookup_tty(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2023-54198 records a Unknown severity vulnerability in tty: fix out-of-bounds access in tty_driver_lookup_tty(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <3df6f492f500a16c231f07ccc6f6ed1302caddf9 || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <b79109d6470aaae7062998353e3a19449055829d || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <953a4a352a0c185460ae1449e4c6e6658e55fdfc || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <84ea44dc3e4ecb2632586238014bf6722aa5843b || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <f9d9d25ad1f0d060eaf297a2f7f03b5855a45561 || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <765566110eb0da3cf60198b0165ecceeaafa6444 || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <fcfeaa570f7a5c2d5f4f14931909531ff18b7fde || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <db4df8e9d79e7d37732c1a1b560958e8dadfefa1 | 3df6f492f500a16c231f07ccc6f6ed1302caddf9, b79109d6470aaae7062998353e3a19449055829d, 953a4a352a0c185460ae1449e4c6e6658e55fdfc, 84ea44dc3e4ecb2632586238014bf6722aa5843b, f9d9d25ad1f0d060eaf297a2f7f03b5855a45561, 765566110eb0da3cf60198b0165ecceeaafa6444, fcfeaa570f7a5c2d5f4f14931909531ff18b7fde, db4df8e9d79e7d37732c1a1b560958e8dadfefa1 |
| Linux/Linuxgeneric | 2.6.28 | Not reported |
Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: tty: fix out-of-bounds access in tty_driver_lookup_tty() When specifying an invalid console= device like console=tty3270, tty_driver_lookup_tty() returns the tty struct without checking whether index is a valid number. To reproduce: qemu-system-x86_64 -enable-kvm -nographic -serial mon:stdio \ -kernel ../linux-build-x86/arch/x86/boot/bzImage \ -append "console=ttyS0 console=tty3270" This crashes with: [ 0.770599] BUG: kernel NULL pointer dereference, address: 00000000000000ef [ 0.771265] #PF: supervisor read access in kernel mode [ 0.771773] #PF: error_code(0x0000) - not-present page [ 0.772609] Oops: 0000 [#1] PREEMPT SMP PTI [ 0.774878] RIP: 0010:tty_open+0x268/0x6f0 [ 0.784013] chrdev_open+0xbd/0x230 [ 0.784444] ? cdev_device_add+0x80/0x80 [ 0.784920] do_dentry_open+0x1e0/0x410 [ 0.785389] path_openat+0xca9/0x1050 [ 0.785813] do_filp_open+0xaa/0x150 [ 0.786240] file_open_name+0x133/0x1b0 [ 0.786746] filp_open+0x27/0x50 [ 0.787244] console_on_rootfs+0x14/0x4d [ 0.787800] kernel_init_freeable+0x1e4/0x20d [ 0.788383] ? rest_init+0xc0/0xc0 [ 0.788881] kernel_init+0x11/0x120 [ 0.789356] ret_from_fork+0x22/0x30
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <3df6f492f500a16c231f07ccc6f6ed1302caddf9 || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <b79109d6470aaae7062998353e3a19449055829d || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <953a4a352a0c185460ae1449e4c6e6658e55fdfc || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <84ea44dc3e4ecb2632586238014bf6722aa5843b || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <f9d9d25ad1f0d060eaf297a2f7f03b5855a45561 || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <765566110eb0da3cf60198b0165ecceeaafa6444 || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <fcfeaa570f7a5c2d5f4f14931909531ff18b7fde || >=99f1fe189daf8e99a847e420567e49dd7ee2aae7 <db4df8e9d79e7d37732c1a1b560958e8dadfefa1 | 3df6f492f500a16c231f07ccc6f6ed1302caddf9, b79109d6470aaae7062998353e3a19449055829d, 953a4a352a0c185460ae1449e4c6e6658e55fdfc, 84ea44dc3e4ecb2632586238014bf6722aa5843b, f9d9d25ad1f0d060eaf297a2f7f03b5855a45561, 765566110eb0da3cf60198b0165ecceeaafa6444, fcfeaa570f7a5c2d5f4f14931909531ff18b7fde, db4df8e9d79e7d37732c1a1b560958e8dadfefa1 |
| Linux/Linuxgeneric | 2.6.28 | Not reported |
Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: tty: fix out-of-bounds access in tty_driver_lookup_tty() When specifying an invalid console= device like console=tty3270, tty_driver_lookup_tty() returns the tty struct without checking whether index is a valid number. To reproduce: qemu-system-x86_64 -enable-kvm -nographic -serial mon:stdio \ -kernel ../linux-build-x86/arch/x86/boot/bzImage \ -append "console=ttyS0 console=tty3270" This crashes with: [ 0.770599] BUG: kernel NULL pointer dereference, address: 00000000000000ef [ 0.771265] #PF: supervisor read access in kernel mode [ 0.771773] #PF: error_code(0x0000) - not-present page [ 0.772609] Oops: 0000 [#1] PREEMPT SMP PTI [ 0.774878] RIP: 0010:tty_open+0x268/0x6f0 [ 0.784013] chrdev_open+0xbd/0x230 [ 0.784444] ? cdev_device_add+0x80/0x80 [ 0.784920] do_dentry_open+0x1e0/0x410 [ 0.785389] path_openat+0xca9/0x1050 [ 0.785813] do_filp_open+0xaa/0x150 [ 0.786240] file_open_name+0x133/0x1b0 [ 0.786746] filp_open+0x27/0x50 [ 0.787244] console_on_rootfs+0x14/0x4d [ 0.787800] kernel_init_freeable+0x1e4/0x20d [ 0.788383] ? rest_init+0xc0/0xc0 [ 0.788881] kernel_init+0x11/0x120 [ 0.789356] ret_from_fork+0x22/0x30
Quoted source text, attributed separately from HOL analysis.