Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: In the bitPutcs function, the bound-check glyph index was derived from the character value masked by 0xff or 0x1ff. This may lead to reading beyond the end of the built-in font array, exceeding the actual number o...

AZL-97097 CVE-2026-74635 affecting package kernel for versions less than 6.6.152.1-1

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitcursor bitcursor fetches the glyph under the cursor with c = scrreadwvcpos; src = vcfont.data + c & charmask w height; where charmask is 0x1ff when vchifontmask is set. The screen...

CVE-2026-74635

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitcursor bitcursor fetches the glyph under the cursor with c = scrreadwvcpos; src = vcfont.data + c & charmask w height; where charmask is 0x1ff when vchifontmask is set. The screen...

EUVD-2026-64572

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitcursor bitcursor fetches the glyph under the cursor with c = scrreadwvcpos; src = vcfont.data + c & charmask w height; where charmask is 0x1ff when vchifontmask is set. The screen...

CVE-2026-74635

CVE-2026-74635 is an out-of-bounds read in the Linux kernel's fbdev subsystem, specifically in bit_cursor() (drivers/video/fbdev/core/bitblit.c). The function indexes font glyph data using a value from the screen buffer without bounds-checking it against the font's glyph count. A local user can t...

PT-2026-79640

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds read issue exists in the Linux kernel's fbdev component. The bit cursor function fetches a glyph under the cursor using a value obtained from scr readw, which may exceed...

CVE-2026-74635: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitcursor bitcursor fetches the glyph under the cursor with c = scrreadwvcpos; src = vcfont.data + c & charmask w height; where charmask is 0x1ff when vchifontmask is set. The screen...

CVE-2026-74635: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitcursor bitcursor fetches the glyph under the cursor with c = scrreadwvcpos; src = vcfont.data + c & charmask w height; where charmask is 0x1ff when vchifontmask is set. The screen...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099764)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099764 advisory. In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitputcs bitputcsaligned/unaligned derived the glyph...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100327)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100327 advisory. In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitputcs bitputcsaligned/unaligned derived the glyph...

K000160685: Linux kernel vulnerability CVE-2025-40322

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bitputcs bitputcsaligned/unaligned derived the glyph pointer from the character value masked by 0xff/0x1ff, which may exceed the actual font's glyph count a...

CLSA-2026-1773139548 kernel: Fix of 78 CVEs

fix: fbdev: fix potential buffer overflow in doregisterframebuffer - qed: Don't collect too many protection override GRC elements CVE-2025-39949 - drm/amd/display: Avoid a NULL pointer dereference CVE-2025-39693 - pNFS: Fix uninited ptr deref in block/scsi layout CVE-2025-38691 - netfilter:...

CLSA-2026-1773056241 kernel: Fix of 21 CVEs

i40e: fix IRQ freeing in i40evsirequestirqmsix error path CVE-2025-39911 - media: rc: fix races with imondisconnect CVE-2025-39993 - VMCI: fix race between vmcihostsetupnotify and vmcictxunsetnotify CVE-2025-38102 - partitions: mac: fix handling of bogus partition table CVE-2025-21772 - tracing:...

CLSA-2026-1773046740 kernel: Fix of 21 CVEs

i40e: fix IRQ freeing in i40evsirequestirqmsix error path CVE-2025-39911 - media: rc: fix races with imondisconnect CVE-2025-39993 - VMCI: fix race between vmcihostsetupnotify and vmcictxunsetnotify CVE-2025-38102 - partitions: mac: fix handling of bogus partition table CVE-2025-21772 - tracing:...

kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling

A flaw was found in the Linux kernel. A local attacker can exploit this vulnerability by providing a specially crafted font glyph index to the bitblit component. This can lead to an out-of-bounds read, potentially resulting in information disclosure or a denial of service...

Oracle Linux 9 : kernel (ELSA-2026-2722)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-2722 advisory. - smc: Fix use-after-free in pnetfindbasendev. Mete Durlu RHEL-126890 CVE-2025-40064 - ntbhwswitchtec: Fix shift-out-of-bounds in switchtecntbmwsettran...

CLSA-2026-1771077729 kernel: Fix of 107 CVEs

net/ieee802154: don't warn zero-sized rawsendmsg CVE-2022-50706 - bpf: Don't redirect packets with invalid pktlen CVE-2022-49975 - media: uvcvideo: Fix 1-byte out-of-bounds read in uvcparseformat CVE-2025-38680 - ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network...

kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling

A flaw was found in the Linux kernel. A local attacker can exploit this vulnerability by providing a specially crafted font glyph index to the bitblit component. This can lead to an out-of-bounds read, potentially resulting in information disclosure or a denial of service...

kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling

A flaw was found in the Linux kernel. A local attacker can exploit this vulnerability by providing a specially crafted font glyph index to the bitblit component. This can lead to an out-of-bounds read, potentially resulting in information disclosure or a denial of service...

kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling

A flaw was found in the Linux kernel. A local attacker can exploit this vulnerability by providing a specially crafted font glyph index to the bitblit component. This can lead to an out-of-bounds read, potentially resulting in information disclosure or a denial of service...