CVE-2026-21368
Memory Corruption when parsing jpeg commands due to unaccounted extra writes to the buffer during validation checks.
CVSS
5.3
Medium
EPSS
0.1%
p0
KEV
—
Exploit Today
0
0-100
Published: Jul 6, 2026 · Last modified: Jul 7, 2026 · CWE-787
0.1%EPSS · 30 days0.1%
2026-07-072026-07-16
Memory Corruption when parsing jpeg commands due to unaccounted extra writes to the buffer during validation checks.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-435007.8 HIG99.8%
——30In the Linux kernel, the following vulnerability has been resolved:
rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present
The DATA-packet handler in rxrpc_input_call_event() and the RESPONSE
handler in rxrpc_verify_response() copy the skb to a linear one before
calling into the security ops only when skb_cloned() is true. An skb
that is not cloned but still carries externally-owned paged fragments
(e.g. SKBFL_SHARED_FRAG set by splice() into a UDP socket via
__ip_append_data, or a chained skb_has_frag_list()) falls through to
the in-place decryption path, which binds the frag pages directly into
the AEAD/skcipher SGL via skb_to_sgvec().
Extend the gate to also unshare when skb_has_frag_list() or
skb_has_shared_frag() is true. This catches the splice-loopback vector
and other externally-shared frag sources while preserving the
zero-copy fast path for skbs whose frags are kernel-private (e.g. NIC
page_pool RX, GRO). The OOM/trace handling already in place is reused.2dCVE-2018-250327.5 HIG98.8%
——30zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.2dCVE-2025-154678.8 HIG98.7%
——30Issue summary: Parsing CMS AuthEnvelopedData or EnvelopedData message with
maliciously crafted AEAD parameters can trigger a stack buffer overflow.
Impact summary: A stack buffer overflow may lead to a crash, causing Denial
of Service, or potentially remote code execution.
When parsing CMS (Auth)EnvelopedData structures that use AEAD ciphers such as
AES-GCM, the IV (Initialization Vector) encoded in the ASN.1 parameters is
copied into a fixed-size stack buffer without verifying that its length fits
the destination. An attacker can supply a crafted CMS message with an
oversized IV, causing a stack-based out-of-bounds write before any
authentication or tag verification occurs.
Applications and services that parse untrusted CMS or PKCS#7 content using
AEAD ciphers (e.g., S/MIME (Auth)EnvelopedData with AES-GCM) are vulnerable.
Because the overflow occurs prior to authentication, no valid key material
is required to trigger it. While exploitability to remote code execution
depends on platform and toolchain mitigations, the stack-based write
primitive represents a severe risk.
The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this
issue, as the CMS implementation is outside the OpenSSL FIPS module
boundary.
OpenSSL 3.6, 3.5, 3.4, 3.3 and 3.0 are vulnerable to this issue.
OpenSSL 1.1.1 and 1.0.2 are not affected by this issue.2dCVE-2022-374349.8 CRI96.5%
——29zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).2dCVE-2022-323869.8 CRI94.9%
——28Tenda AC23 v16.03.07.44 was discovered to contain a buffer overflow via fromAdvSetMacMtuWan.8dCVE-2022-385559.8 CRI94.8%
——28Linksys E1200 v1.0.04 is vulnerable to Buffer Overflow via ej_get_web_page_name.8d