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bbf5d842be
For more information about the release, see:
- https://www.postgresql.org/docs/17/release-17-9.html
- https://www.postgresql.org/docs/17/release-17-10.html
Fixes the following vulnerabilities:
- CVE-2026-6479:
Prevent unbounded recursion while processing startup packets
A malicious client could crash the connected backend by alternating
rejected SSL and GSS encryption requests indefinitely.
- CVE-2026-6473
Fix assorted integer overflows in memory-allocation calculations
Various places were incautious about the possibility of integer overflow
in calculations of how much memory to allocate. Overflow would lead to
allocating a too-small buffer which the caller would then write past the
end of. This would at least trigger server crashes, and probably could
be exploited for arbitrary code execution. In many but by no means all
cases, the hazard exists only in 32-bit builds.
- CVE-2026-6476
Properly quote subscription names in pg_createsubscriber
The given subscription name was inserted into SQL commands without
quoting, so that SQL injection could be achieved in the (perhaps
unlikely) case that the subscription name comes from an untrusted
source.
- CVE-2026-6638
Properly quote object names in logical replication origin checks
ALTER SUBSCRIPTION ... REFRESH PUBLICATION interpolated schema and
relation names into SQL commands without quoting them, allowing
execution of arbitrary SQL on the publisher.
- CVE-2026-6473
Reject over-length options in ts_headline()
The StartSel, StopSel and FragmentDelimiter strings must not exceed 32Kb
in length, but this was not checked for. An over-length value would
typically crash the server.
- CVE-2026-6474
Guard against malicious time zone names in timeofday() and pg_strftime()
A crafted time zone setting could pass % sequences to snprintf(),
potentially causing crashes or disclosure of server memory. Another path
to similar results was to overflow the limited-size output buffer used
by pg_strftime().
- CVE-2026-6472
When creating a multirange type, ensure the user has CREATE privilege on
the schema specified for the multirange type.
The multirange type can be put into a different schema than its parent
range type, but we neglected to apply the required privilege check when
doing so.
- CVE-2026-6478
Use timing-safe string comparisons in authentication code.
Use timingsafe_bcmp() instead of memcpy() or strcmp() when checking
passwords, hashes, etc. It is not known whether the data dependency of
those functions is usefully exploitable in any of these places, but in
the interests of safety, replace them.
- CVE-2026-6477
Mark PQfn() as unsafe, and avoid using it within libpq
For a non-integral result type, PQfn() is not passed the size of the
output buffer, so it cannot check that the data returned by the server
will fit. A malicious server could therefore overwrite client memory.
This is unfixable without an API change, so mark the function as
deprecated. Internally to libpq, use a variant version that can apply
the missing check.
- CVE-2026-6475
Prevent path traversal in pg_basebackup and pg_rewind
These applications failed to validate output file paths read from their
input, so that a malicious source could overwrite any file writable by
these applications. Constrain where data can be written by rejecting
paths that are absolute or contain parent-directory references.
- CVE-2026-6473
Guard against field overflow within contrib/intarray's query_int type
and contrib/ltree's ltxtquery type.
Parsing of these query structures did not check for overflow of 16-bit
fields, so that construction of an invalid query tree was possible.
This can crash the server when executing the query.
- CVE-2026-6473
Guard against overly long values of contrib/ltree's lquery type.
Values with more than 64K items caused internal overflows, potentially
resulting in stack smashes or wrong answers.
- CVE-2026-6637
Prevent SQL injection and buffer overruns in contrib/spi.
check_foreign_key() was insufficiently careful about quoting key
values, and also used fixed-length buffers for constructing queries.
While this module is only meant as example code, it still shouldn't
contain such dangerous errors.
(cherry picked from commit 9fb64dfc24)
Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at https://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches